摘要
采用坐标变换的方式,将单边裂纹载流薄板通电瞬间由温度产生的应力场表达式中的各应力分量分离,并用极坐标进行表示.给出了Ⅰ型穿透裂纹尖端附近的应力场的表达式.最后将温度产生的应力场与单向拉伸载荷作用产生的应力场相叠加,推导出用极坐标表示的机械载荷作用下单边裂纹载流薄板的应力场的表达式,并给出算例.
By means of coordinate transformation, the part of stresses in the expression of stress field caused by temperature at the moment of application of transient current on the plate with a side-crack was separated and expressed in polar coordinate. The stress field near the penetrate crack tip of type I was obtained. Through adding the stress field caused by temperature to the stress caused by tension loaded in the distance, the stress field in the current-carrying plate with a side-crack under the action of mechanical loading could be obtained in polar coordinate. An example is provided.
出处
《力学与实践》
CSCD
北大核心
2005年第3期22-26,共5页
Mechanics in Engineering
基金
国家自然科学基金项目(50275128)资助.
关键词
坐标变换
单边裂纹
载流薄板
机械载荷
温度应力函数
coordinate transformation, current-carrying plate, stress field, a side-crack, mechanical loading
