<div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://files.passeidireto.com/4299100b-c3a4-4893-8d0c-53303ea6ba8b/bg1.png"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">Mec<span class="_0 blank"></span>ânic<span class="_0 blank"></span>a dos <span class="_1 blank"></span>Sólidos</div><div class="t m0 x2 h3 y2 ff1 fs1 fc1 sc0 ls0 ws0">Pr<span class="_0 blank"></span>of<span class="_2 blank"></span>. MSc. Luiz <span class="_1 blank"> </span>An<span class="_0 blank"></span>t<span class="_0 blank"></span>onio</div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://files.passeidireto.com/4299100b-c3a4-4893-8d0c-53303ea6ba8b/bg2.png"><div class="t m0 x3 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">Concen<span class="_0 blank"></span>tr<span class="_3 blank"></span>aç<span class="_0 blank"></span>ão <span class="_1 blank"></span>de T<span class="_4 blank"></span>ensões</div><div class="t m0 x4 h4 y4 ff2 fs2 fc0 sc0 ls1">\uf0d8<span class="ff1 ls0 ws1">Conhecimen<span class="_0 blank"></span>to</span></div><div class="t m0 x5 h5 y5 ff3 fs3 fc0 sc0 ls2">\u2013<span class="ff1 ls0 ws0">Saber iden<span class="_0 blank"></span>tifica<span class="_0 blank"></span>r os tipos de singul<span class="_0 blank"></span>aridades <span class="_0 blank"></span>e sua influênc<span class="_0 blank"></span>ia na </span></div><div class="t m0 x6 h5 y6 ff1 fs3 fc0 sc0 ls0 ws0">concen<span class="_0 blank"></span>tr<span class="_5 blank"></span>aç<span class="_0 blank"></span>ão de t<span class="_5 blank"></span>ensões<span class="_1 blank"> </span> e conh<span class="_0 blank"></span>ecer suas c<span class="_5 blank"></span>onsequências par<span class="_5 blank"></span>a a </div><div class="t m0 x6 h5 y7 ff1 fs3 fc0 sc0 ls0 ws0">r<span class="_0 blank"></span>edução <span class="_5 blank"></span>da resis<span class="_5 blank"></span>tência <span class="_0 blank"></span>do mat<span class="_5 blank"></span>erial.</div><div class="t m0 x4 h4 y8 ff2 fs2 fc0 sc0 ls1">\uf0d8<span class="ff1 ls0 ws1">Habilidade</span></div><div class="t m0 x5 h5 y9 ff3 fs3 fc0 sc0 ls2">\u2013<span class="ff1 ls0 ws0">Calcular as <span class="_5 blank"></span>influência <span class="_0 blank"></span>das singularida<span class="_0 blank"></span>des na c<span class="_5 blank"></span>oncentr<span class="_5 blank"></span>aç<span class="_0 blank"></span>ão de </span></div><div class="t m0 x6 h5 ya ff1 fs3 fc0 sc0 ls0 ws0">tensão <span class="_0 blank"></span>e consequen<span class="_5 blank"></span>te r<span class="_5 blank"></span>edução da r<span class="_5 blank"></span>esist<span class="_5 blank"></span>ência do ma<span class="_5 blank"></span>terial</div><div class="t m0 x4 h4 yb ff2 fs2 fc0 sc0 ls1">\uf0d8<span class="ff1 ls0 ws1">A<span class="_3 blank"></span>titude</span></div><div class="t m0 x5 h5 yc ff3 fs3 fc0 sc0 ls2">\u2013<span class="ff1 ls0 ws0">Identific<span class="_5 blank"></span>ar a e<span class="_5 blank"></span>xist<span class="_5 blank"></span>ência de singularida<span class="_0 blank"></span>des e t<span class="_0 blank"></span>omar medidas par<span class="_5 blank"></span>a </span></div><div class="t m0 x6 h5 yd ff1 fs3 fc0 sc0 ls0 ws0">eliminá-las ou <span class="_0 blank"></span>reduzir <span class="_5 blank"></span>sua influência <span class="_5 blank"></span>na resis<span class="_5 blank"></span>tência <span class="_0 blank"></span>do mat<span class="_5 blank"></span>erial</div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x0 y0 w1 h1" alt="" src="https://files.passeidireto.com/4299100b-c3a4-4893-8d0c-53303ea6ba8b/bg3.png"><div class="t m0 x3 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">Concen<span class="_5 blank"></span>tr<span class="_5 blank"></span>aç<span class="_5 blank"></span>ão <span class="_1 blank"> </span>de <span class="_1 blank"></span>T<span class="_4 blank"></span>ensões</div><div class="t m0 x4 h3 ye ff3 fs1 fc0 sc0 ls3">\u2022<span class="ff1 ls0 ws2">Objetiv<span class="_5 blank"></span>os:</span></div><div class="t m0 x5 h6 yf ff3 fs4 fc0 sc0 ls4">\u2013<span class="ff1 ls0 ws0">Nesse c<span class="_0 blank"></span>apítulo f<span class="_5 blank"></span>alar<span class="_0 blank"></span>emos sobr<span class="_5 blank"></span>e a con<span class="_0 blank"></span>cent<span class="_0 blank"></span>r<span class="_5 blank"></span>ação de </span></div><div class="t m0 x6 h6 y10 ff1 fs4 fc0 sc0 ls0 ws0">t<span class="_0 blank"></span>ensão par<span class="_5 blank"></span>a c<span class="_0 blank"></span>ar<span class="_0 blank"></span>g<span class="_5 blank"></span>as ax<span class="_0 blank"></span>iais</div><div class="t m0 x5 h6 y11 ff3 fs4 fc0 sc0 ls4">\u2013<span class="ff1 ls0 ws0">T<span class="_2 blank"></span>en<span class="_0 blank"></span>são axial <span class="_5 blank"></span>inelástic<span class="_5 blank"></span>a</span></div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x0 y0 w1 h1" alt="" src="https://files.passeidireto.com/4299100b-c3a4-4893-8d0c-53303ea6ba8b/bg4.png"><div class="t m0 x3 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">Concen<span class="_5 blank"></span>tr<span class="_5 blank"></span>aç<span class="_5 blank"></span>ão <span class="_1 blank"> </span>de <span class="_1 blank"></span>T<span class="_4 blank"></span>ensões</div><div class="t m0 x4 h6 y12 ff3 fs4 fc0 sc0 ls5">\u2022<span class="ff1 ls0 ws0">Concen<span class="_0 blank"></span>tr<span class="_5 blank"></span>aç<span class="_0 blank"></span>ão de t<span class="_0 blank"></span>ensão</span></div><div class="t m0 x5 h7 y13 ff3 fs5 fc0 sc0 ls6">\u2013<span class="ff1 ls0 ws0">A concen<span class="_0 blank"></span>tr<span class="_5 blank"></span>ação <span class="_1 blank"> </span>e tensão em barr<span class="_5 blank"></span>as carreg<span class="_5 blank"></span>adas axialment<span class="_5 blank"></span>e surg<span class="_0 blank"></span>e sempre que </span></div><div class="t m0 x6 h7 y14 ff1 fs5 fc0 sc0 ls0 ws0">há uma variação brusc<span class="_5 blank"></span>a <span class="_1 blank"> </span>na seção tr<span class="_5 blank"></span>ansv<span class="_0 blank"></span>er<span class="_0 blank"></span>sal, como por e<span class="_5 blank"></span>x<span class="_0 blank"></span>emplo <span class="_1 blank"> </span>um furo<span class="_5 blank"></span>, et<span class="_0 blank"></span>c.</div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x0 y0 w1 h1" alt="" src="https://files.passeidireto.com/4299100b-c3a4-4893-8d0c-53303ea6ba8b/bg5.png"><div class="t m0 x3 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">Concen<span class="_5 blank"></span>tr<span class="_5 blank"></span>aç<span class="_5 blank"></span>ão <span class="_1 blank"> </span>de <span class="_1 blank"></span>T<span class="_4 blank"></span>ensões</div><div class="t m0 x4 h3 ye ff3 fs1 fc0 sc0 ls3">\u2022<span class="ff1 ls0 ws0">Concen<span class="_5 blank"></span>tr<span class="_5 blank"></span>ação <span class="_1 blank"></span>de t<span class="_5 blank"></span>ensão</span></div><div class="t m0 x5 h8 y15 ff3 fs6 fc0 sc0 ls7">\u2013<span class="ff1 ls0 ws0">Como pode ser observ<span class="_0 blank"></span>ado na figura a t<span class="_0 blank"></span>ensão máxima é maior <span class="_1 blank"> </span>que a </span></div><div class="t m0 x6 h8 y16 ff1 fs6 fc0 sc0 ls0 ws0">tensão média, ent<span class="_0 blank"></span>ão há um fa<span class="_5 blank"></span>tor de corr<span class="_0 blank"></span>eção quando temos um </div><div class="t m0 x6 h8 y17 ff1 fs6 fc0 sc0 ls0 ws0">concen<span class="_0 blank"></span>tr<span class="_5 blank"></span>ador <span class="_1 blank"> </span>de tensão mostr<span class="_5 blank"></span>ado na equação abaix<span class="_5 blank"></span>o:</div><div class="t m0 x7 h9 y18 ff3 fs6 fc0 sc0 ls8">\u2022<span class="ff4 ls0 ws3">\ue72d<span class="_6 blank"> </span>= \ue7ea</span></div><div class="t m0 x8 ha y19 ff4 fs7 fc0 sc0 ls0 ws4">\uebe0á\uebeb <span class="fs6 ws5 v1">/\ue7ea</span></div><div class="t m0 x9 hb y19 ff4 fs7 fc0 sc0 ls0 ws6">\uebe0é\uebd7</div><div class="t m0 x5 h8 y1a ff3 fs6 fc0 sc0 ls7">\u2013<span class="ff1 ls0 ws0">Esse fa<span class="_5 blank"></span>tor depende da<span class="_1 blank"> </span> f<span class="_5 blank"></span>orma da barr<span class="_0 blank"></span>a e da<span class="_1 blank"> </span>s dimensões da </span></div><div class="t m0 x6 h8 y1b ff1 fs6 fc0 sc0 ls0 ws0">singularidade <span class="_1 blank"> </span>pr<span class="_0 blank"></span>esent<span class="_0 blank"></span>e, <span class="_1 blank"> </span>e pode ser determinado atr<span class="_5 blank"></span>a<span class="_0 blank"></span>vés de gr<span class="_5 blank"></span>áficos </div><div class="t m0 x6 h8 y1c ff1 fs6 fc0 sc0 ls0 ws0">que ser<span class="_5 blank"></span>ão<span class="_1 blank"> </span> mostr<span class="_5 blank"></span>ados nos pró<span class="_5 blank"></span>ximos slides</div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf6" class="pf w0 h0" data-page-no="6"><div class="pc pc6 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x0 y0 w1 h1" alt="" src="https://files.passeidireto.com/4299100b-c3a4-4893-8d0c-53303ea6ba8b/bg6.png"><div class="t m0 x3 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">Concen<span class="_5 blank"></span>tr<span class="_5 blank"></span>aç<span class="_5 blank"></span>ão <span class="_1 blank"> </span>de <span class="_1 blank"></span>T<span class="_4 blank"></span>ensões</div><div class="t m0 x4 h3 ye ff3 fs1 fc0 sc0 ls3">\u2022<span class="ff1 ls0 ws0">Vídeo sobr<span class="_5 blank"></span>e <span class="_1 blank"></span>c<span class="_0 blank"></span>oncen<span class="_0 blank"></span>tr<span class="_5 blank"></span>aç<span class="_0 blank"></span>ão de tensões</span></div><div class="t m0 x5 h6 yf ff3 fs4 fc0 sc0 ls4">\u2013<span class="ff1 fc2 ls0 ws7">h<span class="_0 blank"></span>t<span class="_5 blank"></span>tps://www<span class="_7 blank"></span>.<span class="_3 blank"></span>y<span class="_5 blank"></span>outube.c<span class="_0 blank"></span>om/wa<span class="_5 blank"></span>tc<span class="_0 blank"></span>h?v=Y2K<span class="_0 blank"></span>m5iY<span class="_8 blank"></span>rbbE</span></div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf7" class="pf w0 h0" data-page-no="7"><div class="pc pc7 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x0 y0 w1 h1" alt="" src="https://files.passeidireto.com/4299100b-c3a4-4893-8d0c-53303ea6ba8b/bg7.png"><div class="t m0 x3 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">Concen<span class="_5 blank"></span>tr<span class="_5 blank"></span>aç<span class="_5 blank"></span>ão <span class="_1 blank"> </span>de <span class="_1 blank"></span>T<span class="_4 blank"></span>ensões</div><div class="t m0 x4 h6 y12 ff3 fs4 fc0 sc0 ls5">\u2022<span class="ff1 ls0 ws0">F<span class="_3 blank"></span>at<span class="_5 blank"></span>or K par<span class="_5 blank"></span>a v<span class="_0 blank"></span>ariaç<span class="_0 blank"></span>ão de </span></div><div class="t m0 xa h6 y1d ff1 fs4 fc0 sc0 ls0 ws0">seç<span class="_0 blank"></span>ão tr<span class="_5 blank"></span>ans<span class="_0 blank"></span>v<span class="_0 blank"></span>er<span class="_5 blank"></span>sal</div><div class="t m0 xb h7 y1e ff1 fs5 fc3 sc0 ls0 ws0">V<span class="_3 blank"></span>oltar 1</div><div class="t m0 xb h7 y1f ff1 fs5 fc2 sc0 ls0 ws8">V<span class="_3 blank"></span>oltar <span class="fc3">2</span></div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf8" class="pf w0 h0" data-page-no="8"><div class="pc pc8 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x0 y0 w1 h1" alt="" src="https://files.passeidireto.com/4299100b-c3a4-4893-8d0c-53303ea6ba8b/bg8.png"><div class="t m0 x3 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">Concen<span class="_5 blank"></span>tr<span class="_5 blank"></span>aç<span class="_5 blank"></span>ão <span class="_1 blank"> </span>de <span class="_1 blank"></span>T<span class="_4 blank"></span>ensões</div><div class="t m0 x4 h6 y12 ff3 fs4 fc0 sc0 ls5">\u2022<span class="ff1 ls0 ws0">F<span class="_3 blank"></span>at<span class="_5 blank"></span>or K par<span class="_5 blank"></span>a fur<span class="_0 blank"></span>o na barr<span class="_5 blank"></span>a</span></div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf9" class="pf w0 h0" data-page-no="9"><div class="pc pc9 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x0 y0 w1 h1" alt="" src="https://files.passeidireto.com/4299100b-c3a4-4893-8d0c-53303ea6ba8b/bg9.png"><div class="t m0 x3 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">Concen<span class="_5 blank"></span>tr<span class="_5 blank"></span>aç<span class="_5 blank"></span>ão <span class="_1 blank"> </span>de <span class="_1 blank"></span>T<span class="_4 blank"></span>ensões</div><div class="t m0 x4 h3 ye ff3 fs1 fc0 sc0 ls3">\u2022<span class="ff1 ls0 ws0">Concen<span class="_5 blank"></span>tr<span class="_5 blank"></span>ação <span class="_1 blank"></span>de t<span class="_5 blank"></span>ensão</span></div><div class="t m0 x5 h7 y20 ff3 fs5 fc0 sc0 ls6">\u2013<span class="ff1 ls0 ws0">Esses gr<span class="_5 blank"></span>áficos f<span class="_5 blank"></span>oram obt<span class="_0 blank"></span>idos para c<span class="_0 blank"></span>arreg<span class="_5 blank"></span>ament<span class="_5 blank"></span>os <span class="_1 blank"> </span>es<span class="_0 blank"></span>tá<span class="_5 blank"></span>ticos</span></div><div class="t m0 x5 h7 y21 ff3 fs5 fc0 sc0 ls6">\u2013<span class="ff1 ls0 ws0">A tensão não ultr<span class="_5 blank"></span>apassa a <span class="_1 blank"> </span>t<span class="_0 blank"></span>ensão limite de propor<span class="_5 blank"></span>cionalid<span class="_1 blank"> </span>ade</span></div><div class="t m0 x5 h7 y22 ff3 fs5 fc0 sc0 ls6">\u2013<span class="ff1 ls0 ws0">P<span class="_5 blank"></span>ara ma<span class="_0 blank"></span>teriais <span class="_0 blank"></span>fr<span class="_0 blank"></span>ágeis a t<span class="_0 blank"></span>ensão de <span class="_1 blank"> </span>pr<span class="_0 blank"></span>oporcionalidade é pr<span class="_0 blank"></span>atic<span class="_0 blank"></span>ament<span class="_0 blank"></span>e a tensão </span></div><div class="t m0 x6 h7 y23 ff1 fs5 fc0 sc0 ls0 ws0">de ruptur<span class="_0 blank"></span>a, ent<span class="_5 blank"></span>ão <span class="_1 blank"> </span>a falha oc<span class="_0 blank"></span>orrer<span class="_5 blank"></span>á na pro<span class="_5 blank"></span>ximidade do <span class="_1 blank"> </span>concen<span class="_0 blank"></span>tr<span class="_5 blank"></span>ador <span class="_1 blank"> </span>de tensão </div><div class="t m0 x6 h7 y24 ff1 fs5 fc0 sc0 ls0 ws0">causando uma trinca e a falha do elemen<span class="_0 blank"></span>to</div><div class="t m0 x5 h7 y25 ff3 fs5 fc0 sc0 ls6">\u2013<span class="ff1 ls0 ws0">Dev<span class="_0 blank"></span>e-se <span class="_1 blank"> </span>utiliz<span class="_0 blank"></span>ar artifícios que reduz<span class="_5 blank"></span>am a concentr<span class="_5 blank"></span>ação de <span class="_1 blank"> </span>t<span class="_0 blank"></span>ensão tais c<span class="_0 blank"></span>omo </span></div><div class="t m0 x6 h7 y26 ff1 fs5 fc0 sc0 ls0 ws0">mostr<span class="_5 blank"></span>ados na figura abaix<span class="_5 blank"></span>o:</div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pfa" class="pf w0 h0" data-page-no="a"><div class="pc pca w0 h0"><img fetchpriority="low" loading="lazy" class="bi x0 y0 w1 h1" alt="" src="https://files.passeidireto.com/4299100b-c3a4-4893-8d0c-53303ea6ba8b/bga.png"><div class="t m0 x3 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">Concen<span class="_5 blank"></span>tr<span class="_5 blank"></span>aç<span class="_5 blank"></span>ão <span class="_1 blank"> </span>de <span class="_1 blank"></span>T<span class="_4 blank"></span>ensões</div><div class="t m0 x4 h6 y12 ff3 fs4 fc0 sc0 ls5">\u2022<span class="ff1 ls0 ws7">Ex<span class="_3 blank"></span>er<span class="_0 blank"></span>cícios</span></div><div class="t m0 x4 h8 y27 ff3 fs6 fc0 sc0 ls9">\u2022<span class="ff1 ls0 ws0">As dimensões <span class="_1 blank"> </span>da barr<span class="_5 blank"></span>a <span class="_1 blank"> </span>de aço são </span></div><div class="t m0 xa h8 y28 ff1 fs6 fc0 sc0 ls0 ws0">mostr<span class="_5 blank"></span>adas <span class="_1 blank"> </span>na figur<span class="_5 blank"></span>a. <span class="_1 blank"> </span>Se a tensão </div><div class="t m0 xa h9 y29 ff1 fs6 fc0 sc0 ls0 ws0">admissível f<span class="_0 blank"></span>or <span class="ff4">\ue7ea</span></div><div class="t m0 xc hc y2a ff4 fs7 fc0 sc0 ls0 ws9">\uebd4\uebd7\uebe0 <span class="ff1 fs6 ws0 v1">= 115 MP<span class="_5 blank"></span>a, </span></div><div class="t m0 xa h8 y2b ff1 fs6 fc0 sc0 ls0 ws0">det<span class="_0 blank"></span>ermine <span class="_1 blank"> </span>a maior f<span class="_0 blank"></span>orç<span class="_5 blank"></span>a <span class="_1 blank"> </span>axial P </div><div class="t m0 xa h8 y2c ff1 fs6 fc0 sc0 ls0 ws0">que a barr<span class="_5 blank"></span>a <span class="_1 blank"> </span>pode suportar<span class="_2 blank"></span>.</div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div>
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