In this paper the shortage of general machine tool spindle design is analysed and the fuzzy reliability design is brought apply forward for rigidity check of machine tool spindle.

Deep discussion has been carried through in this paper on the fuzzy reliability design of elliptical bearing,the modeling of fuzzy reliability design was carried out on the elliptical bearing by utilizing the data of conventional reliability design,the allowable reliability designing index was obtained by means of a secondary fuzzy synt.

Introduce mechanic detail rigidity fuzzy reliability design and deformation distribution parameter together with rigidity function determination.

Mechanic fuzzy reliability optimization design is optimization analysis about many kind o.

The Optimal Tolerance Distributing of Assemble DimensionalChains Based on Value Engineering and Fuzzy Reliability;

Researches on the Fuzzy Reliability of the Petroleum Pipeline Systems;

On calculation of random-fuzzy reliability of the slope with circular sliding surface;

The fuzzy probability of two typical structures in geomechanics engineering,underground diaphragm wall and retaining wall,is calculated by three representational membership functions and a probability density function for the performance function.

The calculation method of fuzzy probability is found by using some theory and methods of fuzzy mathematics.

The method used in the paper is also applied to research the fuzzy probability of other type of fuzzy restriction conditions in fuzzy probability optima.

Design reference period and design working life are two basic variables in structural reliability design.

The recent development situation on the certainty seismic design theory and the reliability seismic design theory based on structural performance is introduced in this paper.