等截面直杆拉伸与压缩强度条件教学思考  

The Teaching Thinking of Constant Cross-section Straight Rod Tensile and Compression Strength Conditions

作　　者：张争光[1] 代忠旭[1] 

机构地区：[1]三峡大学材料与化工学院,湖北宜昌443002

出　　处：《广东化工》2016年第11期282-283,共2页Guangdong Chemical Industry

基　　金：创建"产学研用"协同育人平台;创新战略性新兴产业人才培养机制的探索与实践(J2014012)

摘　　要：为了实现等截面直杆拉伸与压缩强度方面的教学目标,将生活中的案例引入到教学中。等截面直杆拉伸与压缩强度条件与剪切和挤压、扭转、弯曲三种杆件的基本变形形式的强度条件具有相同的形式,也具有近似的分析推导过程。以典型例题,突出强度条件以解决杆件的应力校核、载荷设计及杆件横截面几何尺寸设计方面的重点问题,收到了预期的教学效果。In order to realize the teaching target in the cross-section straight rod tensile and compression strength aspects, the case in life was introduced to the teaching. It is the same form strength condition of constant cross-section straight rods tensile and compression strength as that of three kinds of basic deformation forms of strength condition of shear and extrusion, torsion and bending, the approximate analytical process is also used to deriving the strength conditions. In a typical example, highlighting strength conditions solve the key problems in the bar stress test, the load and cross section geometry design. The expected teaching effect is achieved.

关 键 词：强度条件 应力 拉伸与压缩 安全 

分 类 号：TB332[一般工业技术—材料科学与工程]