| 252 | 7 | 150 |
| 下载次数 | 被引频次 | 阅读次数 |
利用功的互等定理,推出适用于有限元求解内力影响线的方法.求某截面的影响线时,该法只需对该点所在单元加一组荷载用有限元软件很快可以得到位移图,弯矩影响线与位移图完全一致,而剪力影响线也只需稍稍修改即可得.这种方法较适合于求复杂超静定结构的弯矩影响线.
Abstract：Based on the reciprocal theorem of work,the paper presented a method to calculate influence lines of internal forces with finite element.When calculating the influence line of one section,this method can easily obtain the displacement drawing by applying a set of loads to the element with some finite element software.The moment influence line is totally the same as the displacement drawing,while the shear force influence line needs only a little modification.This method is suitable for calculating complex and hyperstatic structure influence lines.
[1]龙驭球,包世华.结构力学教程(Ι)[M].北京:高等教育出版社,2000:186-198.
[2]王文斌.在ANSYS中实现影响线的计算[C]//2004ANSYS中国用户论文集,2004.
[3]吴鸿庆,任侠.结构有限元分析[M].北京:中国铁道出版社,2000:8-26.
[4]胡海昌.弹性力学的变分原理及其应用[M].北京:科学出版社,1981:160-164.
[5]王勖成.有限单元法[M].北京:清华大学出版社,2003:306-323.
基本信息:
中图分类号:TU311.4
引用信息:
[1]陈静,葛文璇.有限元法求解内力影响线[J].南通大学学报(自然科学版),2007,No.21(02):30-33+37.
2007-06-15
2007-06-15