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Method for calculating and evaluating stress of massive standard parts under different loads

A standard component and maximum stress technology, applied in the direction of calculation, force measurement, measuring device, etc., can solve problems such as errors, heavy manual operation workload, and unacceptable project progress, so as to reduce workload, reduce error probability, and speed up stress. The effect of computing speed

Inactive Publication Date: 2010-09-08
CHINA NUCLEAR POWER ENG CO LTD
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Problems solved by technology

When assessing the stress level of a large number of standard components, since the loads of each component are different, especially when the components are subjected to multi-directional loads, the conventional method needs to calculate the stress of these components one by one. It is prone to a large number of errors, and the progress of the project does not allow

Method used

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  • Method for calculating and evaluating stress of massive standard parts under different loads
  • Method for calculating and evaluating stress of massive standard parts under different loads
  • Method for calculating and evaluating stress of massive standard parts under different loads

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] Such as figure 2 As shown, a stress calculation and evaluation method for a large number of standard components under different loads includes the following steps:

[0030] (1) Extract the load data of all standard components, prepare load data files, and set the maximum allowable stress value of standard components;

[0031] (2) Modeling standard components;

[0032] (3) Apply a unit load in each load direction of the standard component, and carry out the stress calculation of the unit load in each load direction;

[0033] (4) Read the load data in the load data file, and perform simple algebraic superposition with the stress of the unit load in each load direction according to the following formula to obtain the true stress of all standard components:

[0034] σ x ...

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Abstract

The invention relates to a method for calculating and evaluating the stress of standard parts, in particular to the method for calculating and evaluating the stress of massive standard parts under different loads, which is characterized in that: load data files are independently made, which is favorable for conveniently expanding load data and reducing error ratio; actual stress levels of each part can be obtained through simple algebraic superposition only by performing unit load stress analysis for certain times the same as the number of load directions no matter how many parts with the same structure, which greatly saves a computer memory space required by result files at the same time of speeding up the stress analysis; and a maximum stress allowable value of the standard parts is written into a calculation command stream file, so results of the parts can be evaluated at the same time of being obtained, and subsequent evaluation workload is further reduced.

Description

technical field [0001] The invention relates to a stress calculation and evaluation method for standard parts, in particular to a stress calculation and evaluation method for a large number of standard parts under different loads. Background technique [0002] Standard components are widely used in practical engineering, and one characteristic is that these standard components often exist in the form of large quantities. For example, the standard supports and hangers used in nuclear power projects have tens of thousands of standard supports and hangers in each nuclear power plant. Whether the strength of these support and hanger structures is sufficient to withstand the load it can bear directly affects the safety of the entire nuclear power plant. run. This brings up the issue of stress assessment work on these standard components. [0003] At present, the analysis method of the rated load available for standard components is conservatively assessed, but accurate calculat...

Claims

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Application Information

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IPC IPC(8): G06F19/00G01L1/00G01N3/00
Inventor 刘诗华弓振邦刘树斌张双旺
Owner CHINA NUCLEAR POWER ENG CO LTD
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