图所示结构,载荷P=50KkN,AB杆的直径d=40mm,长度l=1000mm,两端铰支。已知材料E=200GPa,σ p =200MPa,σ s =235MPa,a=304MPa,b=1.12MPa,稳定安全系数n st =2.0,[σ]=140MPa。试校核AB杆是否安全。
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举一反三
【简答题】Some people believe that the courses and majors in universities should be adjusted according to the real demands of working positions, and practical skills should be emphasized. While other people thi...