Spot Welded Portion Analysis Method for Vehicle Fracture Simulation
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Solution Overview
Problem
Current fracture analysis methods for spot welded portions in vehicle bodies are inaccurate in determining fracture modes and require extensive manual labor due to limitations in handling multi-layer spot welds, leading to inefficiencies in collision simulation analysis.
Innovation Solution
An automated method that identifies three-layer spot welded portions by determining shared end points and distances between bar elements, allowing for accurate classification and setting of effective widths, thereby improving fracture analysis accuracy and reducing preparation time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual input method is used for fracture analysis preparation, then analysis accuracy can be maintained, but preparation time becomes excessively long
Solution Approach 1:
The system performs automatic identification of multi-layer spot welded portions and automatic setting of effective widths using computer algorithms. The analyzing apparatus processes bar element data autonomously without requiring manual input for each spot welded portion, enabling the system to serve itself in the data preparation process while maintaining analysis accuracy
Solution Approach 2:
The manual mechanical input process is replaced by an automated computer-based system that uses algorithms to identify three-layer spot welded portions and calculate effective widths. This substitution of manual operation with automated computational methods dramatically reduces preparation time while preserving the accuracy required for fracture analysis
2Ease of operation
If two-layer analysis model is used for simplicity, then processing becomes easier, but three-layer spot welded portions cannot be accurately analyzed
Solution Approach 1:
The system transitions from a simple two-layer analysis model to a multi-dimensional approach by examining spatial relationships between bar elements. It uses endpoint coincidence detection and distance measurements to identify three-layer spot welded portions, adding dimensional complexity to the analysis model to accurately distinguish three-layer configurations from two-layer ones
Solution Approach 2:
The system changes the analysis parameters by introducing new detection criteria: checking for coincident endpoints among bar elements and measuring distances between adjacent bar elements. These parameter changes enable the system to accurately identify three-layer spot welded portions while maintaining processing capability
3Measurement precision
If effective width is set manually for each spot welded portion, then analysis accuracy is maintained, but labor requirement increases significantly
Solution Approach 1:
The system automatically calculates and sets effective widths for all spot welded portions using computer algorithms. The analyzing apparatus processes bar element data autonomously to determine effective widths based on the identified spot welded portion configurations, eliminating the need for manual effective width setting while maintaining accuracy
Solution Approach 2:
The automated system performs multiple functions: identifying two-layer spot welded portions, identifying three-layer spot welded portions through endpoint and distance analysis, and setting effective widths for all types. This multi-functional approach replaces multiple manual operations with a single automated process that handles diverse spot welded portion configurations
Data Source
AI summary
An analyzing method of a spot welded portion, includes: acquiring bar elements as the spot welded portion; extracting other bar elements existing at a periphery of a target bar element which is targeted among the acquired bar elements; determining whether or not there is a bar element which shares the same end point with the target bar element among the extracted bar elements; determining that the target bar element and the bar element which shares the same end point with the target bar element are a three-layer spot welded portion when it is determined that there is the bar element which shares the same end point with the target bar element; and determining whether or not there is a bar element whose distance between elements with the target bar element is within a predetermined distance among the extracted bar elements when it is determined that there is not the bar element which shares the same end point with the target bar element, and determining that the target bar element and the extracted bar element are not the three-layer spot welded portion when it is determined that there is not the bar element within the predetermined distance.