id	keyword
fumecheng-7354	contact
fumecheng-7354	elements
fumecheng-7354	wear
fumecheng-7354	friction
fumecheng-7354	surfaces
fumecheng-7354	formation
fumecheng-7354	model
fumecheng-7354	fragments
fumecheng-7354	particles
fumecheng-7354	plastic
fumecheng-7354	materials
fumecheng-7354	stress
fumecheng-7354	welding
fumecheng-7354	value
fumecheng-7354	strain