空军工程大学学报（自然科学版）2011，Vol.12Issue(2)：81-85,5.DOI:10.3969/j.issn.1009-3516.2011.02.017
几何相似体应力-应变分布相同时的载荷关系
The Load Relationships of the Geometric Similar Components under the Same Stress- strain States
摘要
Abstract
Normally, the original components are lessened or enlarged proportionally to build the geometric similar models when large scale components are tested or studied by means of finite element analysis (FEA).In order to ensure that the same stress - strain states present between the considered model and the original component, the loads corresponding to the original components in proportion should be applied to the geometric similar models.Therefore, it is important to study the load relationships among these geometric similar components with the same stress -strain states.Based on the stress expressions of middle point on the below edge of immobile rectangular cross section beam, the loads’theoretical relationships are obtained using the similarity theory.The correctness of these relationships is verified by the components under elastic and/or plastic stress -strain states.The conclusions are shown as follows: for the two components with geometric similar coefficient kl, if the concentrated force coefficient is k2l, the uniformly distributed line force coefficient is kl, or the uniformly distributed plane force coefficient is 1, then the two components are completely the same in stress -strain state.关键词
相似理论/几何相似/有限元分析/载荷Key words
similarity theory/ geometric similar/ FEA/ load分类
数理科学引用本文复制引用
李春旺,孙强,解武杰,杨尊袍,傅振堂..几何相似体应力-应变分布相同时的载荷关系[J].空军工程大学学报（自然科学版）,2011,12(2):81-85,5.基金项目
国家自然科学基金资助项目(10804130) （10804130）
