Reliability Design Method of Upper Beam of High Speed Press
A design method and reliability technology, which can be used in computing, special data processing applications, instruments, etc., and can solve problems such as calculation errors of probabilistic model parameters and structural reliability.
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[0058] The present invention will be further described below in conjunction with drawings and embodiments.
[0059] Such as figure 1 Shown, the present invention a kind of high-speed press upper beam reliability design method, comprises the following steps:
[0060] (1) Establish a reliability design model for the upper beam of a high-speed press that describes uncertain factors in intervals:
[0061] Select the upper beam of a certain type of high-speed press as the research object, such as figure 2 Shown as its 1 / 4 model, according to the actual design requirements, to Figure 4 The cross-sectional dimension h of the upper and middle beams 1 、h 2 , l 1 , l 2 and l 3 Design variables for the size, with image 3 The external force P shown 1 ,P 2 ,P 3 The density ρ is the uncertainty factor described in the interval, and the deformation is the optimization design goal. The maximum allowable stress of the upper beam is [60,61] MPa, and the reliability requirement is ...
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