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关于修正的功的互等定理的讨论

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Indexed by:期刊论文

Date of Publication:2016-09-15

Journal:应用数学和力学

Included Journals:PKU、ISTIC、CSCD

Volume:37

Issue:9

Page Number:993-998

ISSN No.:1000-0887

Key Words:Betti-Maxwell功的互等定理;修正的功的互等定理;倒易功;直梁;线弹性系统

Abstract:以线弹性直梁系统为例,对Betti-Maxwell功的互等定理与修正的功的互等定理进行了比较研究.研究发现处于真实状态的两个不同的直梁系统均可等效地转化为同一直梁受两组不同外力作用的系统,进而揭示了修正的功的互等定理中“两个不相同的线弹性体”即为位移和力的边界条件相互等效的同一个结构.所以,“修正的功的互等定理”实际上仍是Betti-Maxwell功的互等定理的另一种表现形式.

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