Structure steady design method with uncertain load action point position

A load application point, robust design technology, applied in design optimization/simulation, calculation, special data processing applications, etc., can solve the problem of uncertainty in the position of the load application point, and achieve simple implementation, small calculation, and high relative accuracy. Effect

Inactive Publication Date: 2016-08-31
BEIHANG UNIV
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is very common in actual engineering that the location of the load application point is unc...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Structure steady design method with uncertain load action point position
  • Structure steady design method with uncertain load action point position
  • Structure steady design method with uncertain load action point position

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0059] figure 1 A schematic flowchart of a structural robust design method with uncertain load action point positions according to an embodiment of the present invention is shown. like figure 1 As shown, the structural robust design method with uncertain position of the load application point of this embodiment includes:

[0060] S1: Establish a robust optimization model for the continuum structure:

[0061] S2: Select multiple basic working conditions according to the distribution of the position of the load acting point on the structure and the position of the Gauss quadrature node;

[0062] S3: Initialize design variables;

[0063] S4: Perform finite element analysis on each basic working condition to obtain the corresponding structural displacement vector;

[0064] S5: Calculate the mean and standard deviation of the structural flexibility;

[00...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a structure steady design method with an uncertain load action point position. The structure steady design method with the uncertain load action point position comprises the following steps: S1: establishing a continuous body structure steady optimization model; S2: according to a distribution form of the load action point position borne by the structure, and a Gaussian quadrature node position, selecting a plurality of foundation working conditions; S3: initializing a design variable; S4: carrying out finite element analysis on each foundation working condition to obtain a corresponding structure displacement vector; S5: calculating the mean value and the standard deviation of structural flexibility; S6: carrying out sensitivity analysis on the structure; S7: utilizing an asymptote method to update the design variable; and S8: judging whether a termination condition can be met or not, stopping iteration if the termination condition can be met, and otherwise, repeating S4 to S7 until an iteration termination condition is met. The structure steady design method has the advantages of being small in calculation amount, high in relative precision, and simple in implementation on the basis of a traditional topological optimization foundation.

Description

technical field [0001] The invention relates to the technical field of structural topology optimization, in particular to a structural robust design method with uncertain load action point positions. Background technique [0002] Usually, structural topology optimization is completed under certain conditions, but this optimal structure may be relatively fragile when resisting external disturbances, so it is necessary to study structural topology optimization under uncertain conditions. In the actual design process, there are various uncertainties, such as uncertain load, uncertain material, uncertain geometric dimensions and boundaries generated by the manufacturing process. Uncertain loads are further divided into uncertain load magnitudes, uncertain load directions, and uncertain load application point locations. The uncertainty of the location of the load application point has a greater impact on the structural system. Compared with the deterministic optimal design metho...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/23
Inventor 付志方赵军鹏王春洁
Owner BEIHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap