Structural fracture analysis method suitable for photovoltaic single-row greenhouse

Abstract

The invention discloses a structural fracture analysis method suitable for a photovoltaic single-row greenhouse, and relates to the technical field of the photovoltaic single-row shed. The method comprises the following steps of building a geometric model of the photovoltaic greenhouse through three-dimensional modeling software UG, saving the geometric model as a file in an STP format, and importing the file to a DESIGNMODELER module; starting mesh division software ANSYS MESHING to perform mesh division of global analysis, and performing mesh refinement on member connection parts such as welding, bolt connection and geometric deformation parts of the photovoltaic single-row greenhouse, wherein hexahedral elements are adopted for performing the mesh division as far as possible, and the mesh size is required to be in a range of 2-10mm; and performing load combination calculation according to building load standards in a Static Structure module. After adoption of the technical scheme, the method has the beneficial effects that a new calculation basis can be provided for design of a steel structure of an existing photovoltaic single-row greenhouse; a stress intensity factor of a connection position of main members of the photovoltaic single-row greenhouse is calculated through the method, and a weak position of the photovoltaic single-row greenhouse is judged according to a crackextension result.

Description

technical field [0001] The invention relates to the technical field of photovoltaic single-row sheds, in particular to a structural fracture analysis method suitable for photovoltaic single-row sheds. Background technique [0002] In the existing analysis and design methods of photovoltaic single-row sheds, the material strength theory is used for structural design. However, photovoltaic single-row sheds are all in outdoor environments, and are mostly built in harsh environments with humidity, cold or strong winds. Under such conditions for a long time, the steel structure of photovoltaic single-row sheds is prone to cracks due to corrosion, stress concentration, etc. . If cracks occur in the steel structure of the photovoltaic single-row shed, it will further rapidly expand to the surrounding area and cause the structure to fail. Under strong wind conditions, it will cause the overall collapse of the photovoltaic shed and cause serious economic losses. Therefore, it is ne...

AI Technical Summary

Problems solved by technology

However, photovoltaic single-row sheds are all in outdoor environments, and are mostly built in harsh environments with humidity, cold or strong winds. Under such conditions for a long time, the steel structure of photovoltaic single-row sheds is prone to cracks due to corrosion, stress concentration, etc.

If the steel structure of the photovoltaic single-row shed has cracks, it will further expand rapidly to the surrounding area and make the structure invalid. Under strong wind conditions, it will cause the overall collapse of the photovoltaic shed and cause serious economic losses.

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