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Spring optimizing design method

A technology of optimization design and experimental design, applied in calculation, special data processing applications, instruments, etc., can solve the problems of inconvenient optimization design, low precision, and large spring volume in spring design methods, and achieve high accuracy, optimal design, The effect of broad application

Inactive Publication Date: 2012-11-28
FORT VALE ENG SHANGHAI LTD
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  • Description
  • Claims
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method for optimal design of springs in order to overcome the disadvantages that the existing spring design method is not convenient for optimal design, and the resulting spring is large in volume and low in accuracy.

Method used

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Embodiment Construction

[0028] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.

[0029] Step 100: Set initial basic parameters according to the spring application.

[0030] The basic parameters include the first working length, the second working length, working force and so on. Of course, the basic parameters of the initial design may also include initial load, maximum working load, working stroke and working frequency of the spring, etc.

[0031] Step 101: Establish a variable parameterized finite element model for the basic parameters. Wherein, the variable parameters include the middle diameter of the spring, the diameter of the spring wire and the pitch of the spring.

[0032] In order to achieve the purpose of optimal design, the finite element model needs to have the ability to adjust the several factors most actively affecting the stress in the spring desig...

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Abstract

The invention discloses a spring optimizing design method. The method comprises the steps of (1) setting initial basic parameters according to the application of a spring and establishing a variable parameterization finite element model based on the basic parameters; (2) analyzing the shear stress of the spring inner ring according to the finite element model to obtain a maximum shear stress value and comparing the maximum shear stress value with a theoretical calculated stress value result to verify the setting accuracy of the finite element model (3) establishing an experimental design model based on the finite element model and generating an input matrix by selecting a plurality of input points of the variable parameter by using a V-optimal method so as to acquire a maximum shear stress value; (4) performing third-order polynomial fitting according to the array of the experimental design model and the maximum shear stress value and deriving a regression model related to the experimental design model; (5) performing multi-project optimization designs according to the regression model and determining the optimized size of the spring. The method provided in the utility model has high accuracy and can be applied for obtaining optimized spring sizes.

Description

technical field [0001] The invention relates to an optimal design of a spring, in particular to an optimal design method of a spring used in a container safety valve. Background technique [0002] Safety valves are widely used in various boilers, pipelines, containers and other equipment, and are mainly used to ensure safe and stable work within the set pressure range. Therefore, the safety valve plays a vital role in the whole system. The stability of the working state of the safety valve directly affects the operation safety of the entire system. [0003] In safety valve accidents, safety valve spring failure is an important reason. Therefore, in the design process of the safety valve, the design of the spring is a crucial link. As more high-strength materials are applied to the spring design, the spring helix angle becomes larger, and the number of spring coils is reduced to better utilize the material properties. [0004] At present, the stress compensation coefficie...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 赵云
Owner FORT VALE ENG SHANGHAI LTD
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