Influence of the Weld Joint Position on the Mechanical Stress Concentration in the Construction of the Alternative Skid Car System’s Skid Chassis

Jilek, Petr; Berg, Jan; Tchuigwa, Baurice Sylvain Sadjiep

doi:10.3390/app12010397

Cited by 3 publications

(1 citation statement)

References 26 publications

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“…The axles of trailers and semi-trailers are one of the main and most important elements, which must be carefully designed and tested experimentally under static and dynamic loads, as the axle is subjected to additional loads in the event of road roughness or off-road [ 1 ]. The durability of the suspension parts refers to the duration of the onset of fatigue, defined as the number of cycles up to a certain component cracking length under cyclic loads [ 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Vehicle Chassis Axle Fractures

et al. 2023

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With the rapid development of the road transport industry, trucks with semi-trailers have become the main means of transporting goods by road. High quality, durability and reliability of the construction are the main requirements for the production of trailers. Trailer and semi-trailer axles are one of the main and most important components of a truck. Due to the fact that semi-trailer axles are subjected to additional static and dynamic loads during operation, their proper construction is extremely important, therefore they should be carefully designed and tested. The durability of the suspension components refers to the duration of the onset of fatigue. This article presents an analysis of damage to the rear axle of the semi-trailer using macroscopic observations of the damage site and dynamic FEA of stress distribution in the axle material. In order to identify the probable cause of the damage, eight cases of loading the semi-trailer axle were considered. Analytical solutions have shown that in various cases the yield point is exceeded and the strength limit of the modeled semi-trailer axle is reached. The risk of damage to the vehicle’s suspension system components increases on poor roads (bumps and winding road sections).

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Section: Introductionmentioning

confidence: 99%

Analysis of the Vehicle Chassis Axle Fractures

et al. 2023

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Finite Element Analysis and Optimization of Hydrogen Fuel Cell City Bus Body Frame Structure

Yang,

Zhang,

et al. 2023

Applied Sciences

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Hydrogen fuel cell city bus is a type of new energy public transportation. In this paper, in order to evaluate the safety performance of a newly developed hydrogen fuel cell city bus body frame designed by the collaborating enterprise, finite element analysis is conducted to investigate its structural mechanics and dynamic characteristics under four typical operating conditions, including horizontal bending, ultimate torsion, emergency cornering, and emergency braking. Based on the simulation results, although the body frame of the bus meets the stiffness design requirements and avoids body resonance, it exhibits maximum stresses of 328.9 MPa and 348.6 MPa under emergency cornering and ultimate torsion conditions, respectively, exceeding the material yield strength and failing to satisfy the strength design requirements. Therefore, the size optimization method is employed to optimize the thickness of the body frame components. After optimization, the maximum stresses are reduced to 262.7 MPa and 300.6 MPa, respectively, representing a reduction of up to 20.13%. The optimization significantly improves performance and meets the strength design requirements. Furthermore, the body frame is lightened by 106 kg, achieving the goal of weight reduction.

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Material’s Strength Analysis of the Coupling Node of Axle of the Truck Trailer

et al. 2023

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Road transport plays an important role in the transport of goods and people and is important for the national economy. Damage usually excludes the means of transport from operation, which causes disruption of supply chains. One such damage is the failure of the suspension system of the vehicle or trailer, which usually occurs when the vehicle is heavily loaded. Such a defective system has been analyzed in this publication. Mathematical apparatus and finite element method (FEM) numerical simulations were used. A dangerous axle cross-section in terms of load was indicated and the maximum stresses in this area were calculated for two types of roads. On highways, the stress at the critical point was 199 MPa, and on uneven roads it increased to 304 MPa, which is comparable to the yield point. It was found that the second form of vibration may cause stresses in the damage area, but the excitation frequency would have to be quite high. The probability of such a load and failure event occurring is low under operating conditions.

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Influence of the Weld Joint Position on the Mechanical Stress Concentration in the Construction of the Alternative Skid Car System’s Skid Chassis

Cited by 3 publications

References 26 publications

Analysis of the Vehicle Chassis Axle Fractures

Analysis of the Vehicle Chassis Axle Fractures

Finite Element Analysis and Optimization of Hydrogen Fuel Cell City Bus Body Frame Structure

Material’s Strength Analysis of the Coupling Node of Axle of the Truck Trailer

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