Analysis of multiple-impact forces between flexible-rods;

Model test study on the impact forces and mooring line forces of a moored ship under the combined action of wave and current;

Theoretical analysis was carried out on the structure and working principle of the flap gate,the motion law and impact force of the flap gate under different conditions,the method to solve the impact force,the flow pattern and hydraulic loss,etc.

According to pyramid with complex geometric shapes its percussive force and intrusion displacement are calculated and analyzed,so that reasonable range is obtained to determine major geometric parameters of pyramid,which provide theoretical references for further study of penetration ability and damage status of pyramid.

The structure and performance of a transducer designed for the measurement of float timber percussive forces are introduced.

It was at the beginning of 1980s since European and North American scientists and experts started studying percussive force of a vessel impacting a bridge pier and anti-collision facilities protecting the bridge pier.