In this paper, the reliability optimal design method of accept changing load for bolt group link is offered, in the application of the reliability theory and technology of optimization design.

This paper analyses the working state of E line up crane beams and connecting bolt in the whole mould wrokshop by means of testing and finite element methods.

Simply and easy method named check table method in design of tightened bolt connection with uncontrolled tightened force is presented.

The stress and strength of bolt connection are analysed,and some problems which must be considered in structure design are raised.

The paper provides some valuable references and is useful for engineers and technicians on the basis of analysis of problems needing attention in the design of bolt connection.

Strength analysis of rivet and bolt joint structure in aluminum alloy car body of high-speed train;

Stress calculations for bolt joint structures by applying FEM;

According to the theory of mechanial reliability design,discussutility computed methods of reliability design of bolt coupling,to give design compte formula and steps of reliability design of bolt coupling,and selection of principal parameter was conducted experiment study.

In this paper, the dynamic models of bolt coupling with washeris founded on the basis of several hypotheses, and is analysedwith the dynamics theory.