Compensation method for creep aging simulation complex molded surface
A complex profile and creep aging technology, applied in design optimization/simulation, instrumentation, electrical digital data processing, etc., can solve problems such as undercompensation not up to standard, area compensation up to standard, overcompensation, etc., to improve compensation accuracy, Effect of improving compensation efficiency
Pending Publication Date: 2021-11-23
CENT SOUTH UNIV
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Problems solved by technology
[0005] The purpose of the present invention is to provide a compensation method for creep aging simulation complex surface, to solve the existing springback compensation method proposed in the background technology in the curved surface that presents "s" shape changes in multiple dimensions, in different dimensions Springback compensation with multiple peaks and troughs at the same time has low applicability, and there will be problems such as partial area compensation meets the standard, while local surface compensation has over-compensation and under-compensation that does not meet the standard.
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Embodiment 1
[0030] This embodiment provides a compensation method for creep aging simulation of complex profiles, which specifically includes the following steps:
[0031] Step S1. The component is subjected to creep aging simulation through MSC.MARC software. After the simulation is completed, the component model will rebound and shift from the original positioning position, and the simulation model is aligned with the edge of the mold surface through the software displacement and rotation function.
[0032] Step S2. The component model of the simulation result is placed at the top, the target profiles are placed in sequence, and the mold profile is placed at the bottom to ensure that there is a certain gap between the three profiles, and the three models are stored separately.
[0033] Step S3, importing the information of the simulated profile, the target profile and the mold profile into the complex profile positioning compensation algorithm, and accurately positioning the three profil...
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The invention discloses a compensation method for a creep aging simulation complex molded surface. The compensation method comprises the following steps: simulating a part; arranging the simulation molded surface, the target molded surface and the mold molded surface up and down, and forming gaps between the molded surfaces; importing information of the simulation molded surface, the target molded surface and the mold molded surface into a complex molded surface positioning compensation algorithm, and performing accurate positioning; calculating the curvature change of the overall target profile, counting the crest and the trough, and calculating the curvature change corresponding to the crest and the trough; partitioning according to the curvature in the curvature range section of the target molded surface and the corresponding wave crests and wave troughs of the target molded surface; numbering the partitions, marking cloud point attributes, and setting a corresponding compensation coefficient k for each partition; verifying a coordinate difference value h of cloud points corresponding to the simulation molded surface and the target molded surface in the vertical direction; checking whether all cloud points are marked or not; performing profile springback compensation on the cloud points; and exporting the compensated mold surface cloud point. According to the method, the problems of overcompensation, under-compensation, substandard standard and the like in a local area during simulation of springback are solved.
Description
technical field [0001] The invention belongs to the technical field of multiple compensations for mold profiles in creep aging forming simulation, and in particular relates to a compensation method for complex profiles in creep aging simulation. Background technique [0002] With the development of my country's aerospace technology, the structure of modern aerospace vehicles tends to be characterized by multiple curvature changes in multiple dimensions and complex structures. Aiming at the requirement that the overall components meet the requirements of complex structural shape and high performance index after forming, the traditional cold forming technology no longer meets the process requirements. Currently, the integrated manufacturing technology of the overall components is adopted, and the creep aging forming technology is one of the new processing methods for integral forming. , the technology meets the shape-property integrated forming technology by regulating the mic...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G06F30/15G06F30/23G06F113/28G06F119/14
CPCG06F30/15G06F30/23G06F2113/28G06F2119/14Y02P90/30
Inventor 湛利华劳山峰徐永谦黄明辉劳泽锋杨有良
Owner CENT SOUTH UNIV