1、第四章第四章 桿件的變形計算桿件的變形計算第三章第三章 桿件橫截面上的應(yīng)力應(yīng)變分析（下）桿件橫截面上的應(yīng)力應(yīng)變分析（下）PART A PART A 拉壓桿的軸向變形拉壓桿的軸向變形lll1llEAFNEAlFlNPART A PART A 拉壓桿的軸向變形拉壓桿的軸向變形EAlFlNPART A PART A 拉壓桿的軸向變形拉壓桿的軸向變形lxEAxFl)(dNniiiiEAlFl1NPART A PART A 拉壓桿的軸向變形拉壓桿的軸向變形bbbbb1)1 (2EGPART A PART A 拉壓桿的軸向變形拉壓桿的軸向變形PART A PART A 拉壓桿的軸向變形拉壓桿的軸向變形BC

2、ABlllABABABABEAlFlN800102004001040331 . 0mm167. 024010200400102033NBCBCBCBCEAlFl067mm. 0167. 01 . 0BCABlllPART A PART A 拉壓桿的軸向變形拉壓桿的軸向變形PART A PART A 拉壓桿的軸向變形拉壓桿的軸向變形PART A PART A 拉壓桿的軸向變形拉壓桿的軸向變形030sinFFAC80kN2 FFAC030cosACBCFFkN340BCFPART A PART A 拉壓桿的軸向變形拉壓桿的軸向變形111AElFCClACACAC96010200cos30/1000

3、108033481mm. 0222AElFCClBCBCBCmm277. 050002100110001030433PART A PART A 拉壓桿的軸向變形拉壓桿的軸向變形0.277mm2CCCx44mm. 1cot30sin30/21CCCCCy47mm. 122xyCCC0.277mm2CCCx0.278mmxC44mm. 1yC第三章第三章 桿件橫截面上的應(yīng)力應(yīng)變分析（下）桿件橫截面上的應(yīng)力應(yīng)變分析（下）PART B PART B 圓軸的扭轉(zhuǎn)變形及相對扭轉(zhuǎn)角圓軸的扭轉(zhuǎn)變形及相對扭轉(zhuǎn)角xGIMpxddpxGIMxddpGIpGIPART B PART B 圓軸的扭轉(zhuǎn)變形及相對扭轉(zhuǎn)角圓軸

4、的扭轉(zhuǎn)變形及相對扭轉(zhuǎn)角pxGIMxddlpxxGIM0dpxGIMpxGIlMnipiixiGIlM1PART B PART B 圓軸的扭轉(zhuǎn)變形及相對扭轉(zhuǎn)角圓軸的扭轉(zhuǎn)變形及相對扭轉(zhuǎn)角PART B PART B 圓軸的扭轉(zhuǎn)變形及相對扭轉(zhuǎn)角圓軸的扭轉(zhuǎn)變形及相對扭轉(zhuǎn)角pABxABABGIM320.061080140049m/01375rad. 0pBCxBCBCGIM320.04108080049m/03978rad. 0PART B PART B 圓軸的扭轉(zhuǎn)變形及相對扭轉(zhuǎn)角圓軸的扭轉(zhuǎn)變形及相對扭轉(zhuǎn)角PART B PART B 圓軸的扭轉(zhuǎn)變形及相對扭轉(zhuǎn)角圓軸的扭轉(zhuǎn)變形及相對扭轉(zhuǎn)角CBDCDBpCBxCBpDCxDCGIlMGIlM18013180GIpMaaGIpM540PART B PART B 圓軸的扭轉(zhuǎn)變形及相對扭轉(zhuǎn)角圓軸的扭轉(zhuǎn)變形及相對扭轉(zhuǎn)角aGIpM540ppIMdIdM232maxmaxppIMdIdM232maxmax40010801080403540233aGIIdpp81MPa.69PART B PAR