Crash Test Carriage With Lateral Actuation for Yaw Simulation
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Solution Overview
Problem
Conventional crash simulation test arrangements for motor vehicles fail to accurately simulate yawing movements and lateral impacts, which are critical in real-world accident scenarios, leading to incomplete force simulation and reduced realism.
Innovation Solution
Incorporation of a third actuating element that accelerates the test assembly in a horizontal direction perpendicular to the longitudinal axis, enabling the simulation of yaw and side impact movements, in addition to longitudinal and vertical accelerations, through a combination of actuating elements and guide rails, allowing for more complex vehicle kinematics and realistic crash simulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional test arrangements use only longitudinal and vertical actuating elements, then the structure remains simple, but yawing movements and lateral impacts cannot be simulated
Solution Approach 1:
The patent introduces a third actuating element that applies forces in a lateral direction (perpendicular to both the longitudinal axis and vertical direction), adding a new dimension to the simulation capability. This enables yawing movements and lateral impact simulation while maintaining a modular structure that doesn't overly complicate the system.
2Strength
If the carriage arrangement uses heavy materials for structural strength, then strength is improved, but acceleration values decrease and stress on the system increases
Solution Approach 1:
The patent employs composite material construction for the carriage arrangement, combining materials with high strength-to-weight ratios. This allows the carriage to maintain structural integrity and strength while minimizing mass, thereby achieving higher acceleration values and reducing stress on the actuating elements during crash simulations.
3Reliability
If the test arrangement simulates only longitudinal acceleration, then the device complexity remains low, but the simulation realism is reduced
Solution Approach 1:
The patent divides the actuating system into three independent segments: a first actuating element for longitudinal acceleration, a second actuating element for vertical acceleration, and a third actuating element for lateral acceleration. This segmentation allows each element to be optimized for its specific function while collectively achieving realistic multi-dimensional crash simulation.
Solution Approach 2:
The patent implements dynamic simulation by enabling the carriage arrangement to respond to time-varying force profiles in three independent directions. The actuating elements can apply dynamic loads that replicate real-world crash scenarios, including yawing movements and lateral impacts, enhancing simulation realism.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows for a more comprehensive simulation of accident forces, including yaw and side impacts, enhancing the realism and accuracy of crash testing while reducing the weight of the carriage arrangement to achieve higher acceleration values and lower stress on the system, thereby improving safety and simulation fidelity.
Implementation Method 1
a test arrangement for the crash simulation of motor vehicles which allows a movement simulation in all three spatial directions
Data Source
Figure 1a
Figure 1b
Figure 1c~1d
AI summary
The present invention relates to a test arrangement for the crash simulation of motor vehicles, said test arrangement having a first carriage, which is movable substantially horizontally along a longitudinal axis, and a second carriage, which is movable along the longitudinal axis together with the first carriage, wherein the second carriage is attached to the first carriage in such an articulated manner that the second carriage is movable with respect to the first carriage. In order to be able to simulate actual accident conditions better, in the test arrangement according to the invention, in addition to at least one first actuating element and at least one second actuating element, there is also provided at least one third actuating element, which is configured to accelerate the second carriage in a horizontal direction substantially perpendicular to the longitudinal axis.