摘要
针对岸边集装箱起重机中的单轴对称箱梁,对薄壁箱梁的剪力滞效应进行了探讨,并考虑载荷在横向作用位置对剪力滞效应的影响,合理构造纵向位移函数,应用能量变分法推导出控制微分方程和边界条件,获得闭合解,为工程应用提供了可参考的理论依据。经有限元验证,结果吻合良好。
Aimed at the single axle symmetry box girder of the coast sided container crane, a discussion was carried out on the shearing force sluggish effect of thin walled box girder. By considering the influence on shearing force sluggish effect affected by the loading＇s transverse acting position, the longitudinal displacement function was rationally constructed. The controlling differential equation and boarder conditions were derived by the use of energy variational method and the closed solution was obtained, thus a reference-able theoretical basis was provided for the engineering application. Through the finite element verification, it showed that the result obtained from using the method provided by this paper made a good agreement with the result obtained by finite element method,
出处
《机械设计》
CSCD
北大核心
2007年第7期31-34,共4页
Journal of Machine Design
基金
上海市科技"登山计划"资助项目(06DZ11202)
关键词
起重机薄壁箱梁
剪力滞效应
能量变分原理
thin walled box girder of crane
sluggish effect of shearing force
principle of energy variation
