A method for applying limit plastic load analysis under combined loads
A technology of combining loads and loads, applied in design optimization/simulation, instrumentation, electrical digital data processing, etc., can solve the problems that the ultimate plastic load analysis method has not been given, and has not been widely used.
Active Publication Date: 2022-06-10
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology
The ultimate plastic load analysis method under the combined load is not given, and the current ultimate plastic load analysis method has limitations and has not been widely used
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[0050] In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, however, the present invention may also be
[0058] 7) Evaluate the actual load on the structure.
[0061] Analysis of Loading History and Structural Dimensions for Normalized Ultimate Loads and Plastic Collapse for Straight Tube and Tee Structures
[0063] Ultimate load formula:
[0065] The plastic collapse load formula:
[0068] Ultimate load formula:
[0070] The plastic collapse load formula:
[0073] Although the preferred embodiments of the present invention have been described, those skilled in the art, once aware of the basic invention
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The invention discloses a method for applying limit plastic load analysis under the action of combined loads. The method includes: calculating the limit load and plastic collapse load of the structure to be analyzed under the action of several single loads; The plastic collapse load is used as a standardized parameter for the ultimate plastic load analysis of the structure to be analyzed; the ultimate load formula and the plastic collapse load formula of the structure to be analyzed under the combined load are obtained by fitting; the ultimate load and plasticity of the structure to be analyzed under the combined load are obtained The envelope formula under the collapse load; the evaluation of the actual load on the structure to be analyzed; the realization of the ultimate plastic load analysis method of the structure under the combined load has important engineering significance for the study of the ultimate plastic load of the structure under the combined load.
Description
A method of applying limit plastic load analysis under combined load technical field The present invention relates to the limit plastic load analysis field of nuclear grade equipment and pipeline, particularly, relate to a kind of in combination [0001] Method for applying limit plastic load analysis under load. Background technique [0002] In the design of nuclear-grade equipment and pipelines in nuclear power plants, most of the current analysis and design methods are used. analytical design The main purpose is to prevent structural plastic collapse, and the main analysis methods include elastic stress analysis and ultimate plastic load analysis Law. In contrast to the elastic stress analysis method, the ultimate plastic loading analysis method does not require the classification of the stress, and in some cases The elastic stress analysis method has a higher limit, so when the elastic stress analysis method cannot meet the evaluation criteria of the specification,...
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IPC IPC(8): G06F30/23G06F119/14
Inventor 张瀛张丽屏谢海刘贞谷田俊傅孝龙杜娟郑斌杨宇高世卿
Owner NUCLEAR POWER INSTITUTE OF CHINA