变截面叶片受飞射物强烈撞击的塑性动力响应  

PLASTIC DYNAMIC RESPONSE OF TURBO BLADE ROTATING IN HIGH SPEED UNDER IMPACT BY FLYING OBJECT

作　　者：孙苏亚[1] 杨嘉陵[1] 李松年[1] 邵延峰 

机构地区：[1]北京航空航天大学固体力学研究所

出　　处：《机械工程学报》1999年第1期99-102,共4页Journal of Mechanical Engineering

基　　金：国家自然科学基金

摘　　要：以涡轮发动机为背景，讨论了高速转动的涡轮叶片受到飞射物强烈撞击后的塑性动力响应问题。根据变截面叶片做高速旋转的特点，建立了新的力学模型，分析了叶片受撞击后的瞬态变形，包括质量比的影响，涡轮旋转所引起的离心力的影响以及输入能量的影响等。The plastic dynamic response of a turbo blade rotating in high speed under impact by a flying object is analyzed. The problem is modeled by a rigid perfectly, plastic beam with variable cross section rotating about the turbo disc centre, subjected to the impact of a rigid body at its free end. The emphasis is focused on the effects of various factors such as the ratio of the mass, the centrifugal force caused by the rotation of the turbo disc and the input energy on the instantaneous deformation of the blade.

关 键 词：塑性动力响应 撞击 涡轮发动机 变截面叶片 

分 类 号：O344[理学—固体力学]