自由梁在中点受到质量块撞击的剪切失效

剪切失效是强动载荷作用下结构失效的重要模式，从自由梁在中点受到质量块撞击后发生剪切失效的无量纲判据的分析表明，在初始速度间断面上是否发生剪切失效取决于质量块无量纲初始动能、质量比及梁的无量纲厚度。

Shear Failure of a Free-Free Beam Subjected to Impact by a Projectile at the Mid- Span

Shear failure is an important mode of dynamic failure of structural members under impulsive loading.In this paper the non-dimensional criterion of the shear failure of a free-free beam subjected to impact by a projectile at the mid-span is presented.It is illustrated that whether a shear failure occurs at the interface,where the initial velocity has discontinuity,depends on the initial kinetic energy of the projectile,the mass ratio and the non-dimensional thickness of the beam.