Mass loading method and system

A mass loading and mass technology, applied in instrumentation, calculation, electrical and digital data processing, etc., can solve problems such as difficulty in ensuring consistent moment distribution, stress concentration, and inability to truly reflect physical properties.
CN105243192AActive Publication Date: 2016-01-13COMAC +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
COMAC
Publication Date
2016-01-13

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Abstract

The present invention relates to a mass loading method and system. The mass loading method and system applies the mass to load on a structural model. The method comprises: intensively preprocessing the mass to obtain multiple discrete mass points; carrying out finite element modeling on the structural model to obtain multiple structural nodes; establishing a sub-regional matching relation between the multiple discrete mass points and the multiple structural nodes; and using a three-dimensional interpolation function to carry out sub-regional interpolation, thereby realizing that the mass is uniformly loaded on the structural model. The mass loading method and system of the present invention exert the following beneficial technical effects that: the mass is enabled to distribute on the structural nodes of the structural model as uniform as possible, and the physical behavior can be truly reflected.
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Description

technical field

[0001] The present invention relates to mass loading methods and systems. Background technique

[0002] Structural finite element simulation is often coupled with other disciplines to solve specific engineering physics problems. The mass inertial force as a continuous physical field also needs to be loaded on the structural model when necessary. The structural model is described by finite elements, discretized as a collection of beams, rods, shells or solid elements. Mass needs to be reasonably distributed on the corresponding structural nodes of the structural model. According to the natural division of components and areas, the quality is first processed into many independent quality points in a centralized manner.

[0003] In the past, the mass point was directly associated with the nearest structural node, and the two were rigidly connected. All degrees of freedom of the mass point were completely dependent on the degrees of freedom of the structure, w...

Claims

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