如图所示为二杆桁架,1杆为钢杆,许用应力[σ]1=160MPa,横截面面积A1=6cm2;2杆为木杆,其许用压应力[σ]2=7MPa,横截面面积A2=100cm2。如果载荷P=40kN,试校核结构强度。 [img src="https://img.haodaxue.net/uploadimg/image/20200721/20200721094659_71716.png" alt="" />
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正确答案: [img src="https://img.haodaxue.net/uploadimg/image/20200721/20200721094726_26157.png" alt="" /> [img src="https://img.haodaxue.net/uploadimg/image/20200721/20200721094742_73860.png" alt="" /> 答案分析:无
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