Analytical solutions for a uniformly loaded circular plate with clamped edges

INTRODUCTION The problem of circular plates subjected to auniform load is one of the classical problems in elas-ticity theory,which also is encountered frequently inpractice.Timoshenko and Goodier(1970)presented athree-dimensional solution for uniformly loaded iso-tropic circular plates with simply supported edges.Analytical solutions of isotropic circular plates witheither clamped or simply supported edges subjectedto a uniform load,which were derived based on thinplate theory with Kirch…     

浅谈初中生物课的导入

课堂教学是一门艺术,而课堂导语更是艺术中的艺术,“转轴拨弦三两声,未成曲调先有情。”一个好的开头是师生间建立感情的第一座桥梁,它既能引起学生的兴趣,又能激发学生的求知欲,为整节课的学习打下良好的基础,使整个教学活动进行得生动、活泼、自然。     

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结合对预制梁现场施工管理,从T梁的钢筋加工及安装、混凝土浇筑、预应力施加3个关键工序,分析了负弯矩缩锚、梁体裂缝、梁体侧弯3个较为突出的问题,并提出了有效的预防措施。     

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浅议语文课堂教学境界美的创造

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Analytical solution for fixed-end beam subjected to uniform load

A bi-harmonic stress function is constructed in this work. Ariy stress function methodology is used to obtain a set of analytical solutions for both ends fixed beams subjected to uniform load. The treatment for fixed-end boundary conditions is the same as that presented by Timoshenko and Goodier （1970）. The solutions for propped cantilever beams and cantilever beams are also presented. All of the analytical plane-stress solutions can be obtained for a uniformly loaded isotropic beam with rectangular cross section under different types of classical boundary conditions.     

Three-dimensional analysis of a thick FGM rectangular plate in thermal environment

The thermal behavior of a thick transversely isotropic FGM rectangular plate was investigated within the scope of three-dimensional elasticity. Noticing many FGMs may have temperature-dependent properties, the material constants were further considered as functions of temperature. A solution method based on state-space formulations with a laminate approximate model was proposed. For a thin plate, the method was clarified by comparison with the thin plate theory. The influences of material inhomogeneity and temperature-dependent characteristics were finally discussed, through numerical examples. Project (No. 10002016) supported by National Natural Science Foundation of China     

用“找圈节点法”识别短路

在中学学生学习电路时,容易碰到的一个困难点是正确的识别短路,作者在教学中采用“找圈节点法”．有效地帮助学生解决学习中的困难。     

生物力学课程教学问题及教学方法改革

该文总结生物力学课程教学过程中出现的若干问题,分析探讨问题出现的原因,并针对性地提出相应的教学方法改革措施。以教师为主导,突出学生在课程教学中的主体作用,引导学生主动思考、积极参与,以提高生物力学课程的教学质量。     

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