Conductive Rod Assembly Geometry for Vehicle Vibration Stress
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Solution Overview
Problem
The existing conductive rods in vehicles experience excessive stress due to suboptimal ratios of diameter, length, and elastic modulus, leading to loosening, deformation, and potential damage during varying road conditions.
Innovation Solution
A conductive rod design with a diameter and elastic modulus ratio defined by μ2L/πE≤δ≤2(1+μ2L/πE), where δ is the diameter, L is the length, E is the elastic modulus, and μ is 0.5 Gpa1/4, incorporating transition sections and connection holes for improved stress distribution and fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the diameter, length, and elastic modulus of the conductive rod are not optimally ratioed, then the conductive rod can be easily manufactured with standard dimensions, but the conductive rod experiences large stress during vehicle operation on bumping roads
Solution Approach 1:
The patent applies parameter changes by establishing an optimized dimensional ratio relationship among diameter (δ), length (L), and elastic modulus (E) of the conductive rod. The specific formula δ = μ√(L/E) with μ = 0.5 Gpa^1/4 transforms the conventional independent selection of parameters into an interdependent optimized system, directly resolving the stress issue during vehicle operation while maintaining manufacturing feasibility.
2Reliability
If the conductive rod uses standard dimensions without optimized ratios, then the manufacturing process is simple, but the fixing assembly experiences torque attenuation and loosening
Solution Approach 1:
The optimized dimensional parameters (diameter δ, length L, elastic modulus E) directly improve fixing stability by reducing stress on the fixing assembly. This parameter optimization prevents torque attenuation and loosening during vehicle operation, achieving reliable fixing without adding structural complexity to the assembly itself.
3Strength
If the conductive rod diameter is increased to reduce stress, then the stress resistance improves, but the weight and space occupation increase
Solution Approach 1:
The patent avoids simply increasing diameter by establishing an optimized ratio among diameter (δ), length (L), and elastic modulus (E). This multi-parameter optimization allows the conductive rod to achieve adequate stress resistance through coordinated parameter selection rather than unilateral dimension increase, thereby controlling weight and space occupation.
Data Source
AI summary
A conductive rod, including a conductive rod body, the diameter of the conductive rod body satisfiesμ2LπE≤δ≤2(1+μ2LπE),wherein δ is the diameter of the conductive rod body, and the unit thereof is mm; L is the length of the conductive rod body, and the unit thereof is mm; E is the elastic modulus of the conductive rod body, and the unit thereof is Gpa; and μ is 0.5 Gpa1/4.