某谷物筒仓侧壁压力分析

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分析软件:MSC.MARC

采用有限元方法对筒仓侧壁压力进行了分析。

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钢板筒仓侧壁压力的非线性有限元分析
工业建筑, 2008, 38(sup.), 447-451.

摘要:钢板筒仓已有超过70年的使用历史。Janssen公式的提出,使钢板筒仓的设计有了理论基础,但难以适应各种复杂的筒仓结构和形状。本文基于大型有限元软件MSC.MARC,通过借助MARC提供的用户自定义材料功能,开发了关联流动和非关联流动弹塑性本构模型,利用MARC自带的接触功能,对筒仓侧壁的应力进行了分析,并将结果与Janssen公式进行了对比。分析结果表明,非线性有限元计算可以准确获得筒仓侧壁的压力分布且具有较好的灵活性。
关键词:Janssen公式 弹性理论 关联流动塑性 非关联流动塑性

Nonlinear finite element analysis for the wall pressure in a steel silo
Industrial Structure, 2008, 38(sup.), 447-451.

Abstract: It has been 70 years since people started using steel silos for the storage of grain. The proposal of Janssen’s Formula makes a theoretical foundation for the study of steel silos, but it is difficult to adapt the formula to complex silo structures and shapes. This paper is based on finite element software MSC.MARC. By using user-defined material function provided by MARC, associated and non-associated flow of elastic-plasticity constitutive models are developed. Wall stress of the silo is analyzed by the contact function in MARC, and the results are compared with Janssen’s Formula. The results show that the non-linear finite element calculation can be accurate to the silo wall pressure distribution and of better flexibility.
Key words: Janssen’s Formula, elastic theory, associated plastic flow, non-associated plastic flow

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