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OALib Journal期刊
ISSN: 2333-9721
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复杂载荷下弯管的极限载荷
DOI: 10.3969/j.issn.1671-7627.2014.06.015, PP. 83-87
Keywords: 弯管,面内弯矩,内压,极限载荷,有限元
Abstract:
考虑几何和材料的非线性相互作用,采用有限元方法研究复杂载荷下弯管的极限载荷。通过对比过去的研究成果,分析了内压、面内弯矩及其组合下的极限载荷规律。根据有限元结果,研究了直管强化及内压的强化对极限载荷的影响。最后提出了弯矩以及内压、弯矩联合作用下的极限压力、极限弯矩与弯管几何尺寸的定量关系。提出的计算公式扩大了弯曲系数λ的使用范围,反映了弯管强化作用。
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