Vehicle Impact Analysis Using Two-Point-Contact Curves
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current vehicle impact analysis methods are inaccurate and non-ergonomic due to reliance on extensive manual pre-processing and post-processing, particularly when determining two-point-contact locations on vehicle surfaces, which are crucial for safety analysis but lack precision.
Innovation Solution
A computer-implemented method using B-Rep (Boundary Representation) to determine two-point-contact curves by solving differential equations based on surface parameterizations, providing a more accurate and ergonomic approach by integrating numeric steps and intersecting spheres with the vehicle's surface, allowing for precise analysis of two-point-contact impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual pre-processing and post-processing methods are used to determine two-point-contact locations, then the analysis can be performed, but the accuracy and ergonomics deteriorate due to extensive manual intervention
Solution Approach 1:
The patent replaces manual mechanical operations with an automated computer-implemented method. The system automatically determines two-point-contact curves by solving differential equations based on B-Rep surface parameterizations, eliminating the need for manual pre-processing and post-processing while improving both accuracy and ease of operation.
Solution Approach 2:
The patent transforms the geometric problem into a mathematical parameter space by using surface parameterizations (u,v) and (a,b) to represent points on the B-Rep surfaces. This parameter transformation enables automated calculation of two-point-contact curves through differential equations, replacing manual geometric analysis with precise mathematical computation.
2Productivity
If automated methods are used to determine two-point-contact locations, then productivity improves, but measurement precision may deteriorate without proper mathematical foundations
Solution Approach 1:
The patent segments the complex geometric problem into manageable mathematical components: surface parameterizations, differential equations, and numeric integration steps. This segmentation allows automated computation while maintaining precision by breaking down the determination of two-point-contact curves into solvable mathematical sub-problems.
Solution Approach 2:
The patent performs preliminary action by establishing rigorous mathematical foundations (B-Rep surface parameterizations and differential equations) before computation. This preliminary mathematical framework ensures that automated computation maintains high precision while improving productivity, as the mathematical model is prepared in advance for efficient numeric solution.
3Ease of operation
If simple geometric models are used for impact analysis, then ease of operation improves, but manufacturing precision deteriorates due to inadequate representation of complex vehicle surfaces
Solution Approach 1:
The patent transitions from simple point-based contact models to curve-based two-point-contact representations. By determining continuous two-point-contact curves on the B-Rep surfaces, the method provides more accurate geometrical representation of impact paths while maintaining ease of operation through automated computation. This dimensional enhancement from points to curves improves manufacturing precision without complicating the user interface.
Data Source
AI summary
A computer-implemented method for vehicle impact analysis including obtaining a B-Rep representing an outer surface of a vehicle, the B-Rep having faces and obtaining a radius value for a contact sphere. The method also includes determining one or more two-point-contact curves of the B-Rep for the radius value. The determining includes, for each respective two-point-contact curve, solving a respective differential equation based on the B-Rep. The method forms an improved solution for vehicle impact analysis.