Ship cabin rapid modeling method based on APDL language of ANSYS/LS-DYNA

A modeling method and cabin technology, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve problems such as error-prone, time-consuming and cumbersome, and inflexible design process, so as to increase reliability and reduce workload. , the effect of improving the efficiency of meshing
CN110427645AInactive Publication Date: 2019-11-08NAVAL UNIV OF ENG PLA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NAVAL UNIV OF ENG PLA
Publication Date
2019-11-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a ship cabin rapid modeling method based on an APDL language of ANSYS / LS-DYNA. The method comprises the following steps: firstly, parameterizing each panel of a cabin and eachkey size of a reinforcing rib structure of the panel, then carrying out common node setting on an overlapping region of a cabin wall and a reinforcing rib by utilizing an APDL language, establishinga solid model of each panel and the reinforcing rib of the cabin, and quickly cutting the model by adopting a cyclic instruction, controlling a distance and changing the position and direction of a working surface; secondly, performing grid rapid division on the cabin model and the air domain by utilizing a hexahedron entity unit with a specific size, defining a welding structure between cabin walls by adopting a fixedly connected fracture contact model (TSTS), and establishing a ship cabin finite element analysis model. According to the method, a common node method and a fixed connection fracture failure method are adopted to define a single cabin wall inner welding structure, and the reliability of ship cabin indoor explosion test damage effect research is improved.
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Description

technical field

[0001] The invention relates to the technical field of hull modeling, in particular to a rapid modeling method for ship cabins based on the APDL language of ANSYS / LS-DYNA. . Background technique

[0002] The analysis of the response of the cabin structure to the explosion load is one of the essential contents in the design of the ship structure and the evaluation of the damage power of the warhead. Due to the high cost of the implosion test of the equal-scale ship cabin, the test usually only obtains a set of working conditions. The results of the data under the condition are relatively large, and the results are quite accidental. Therefore, the combination of theoretical calculation and numerical simulation is often used to analyze the overpressure in the cabin, the deformation of the bulkhead, and the internal vibration. Among them, ANSYS / LS-DYNA is one of the more commonly used finite element analysis software, which is often used to solve nonlinear dynam...

Claims

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