A Numerical Method for the Paving Block Evaluation

Abstract:

A process to evaluate the paving block design is proposed. A numerical tire model is developed appropriately for the analysis. The contact pressure between the tire and paving block is calculated. Its distribution pattern is compared with the result of the field tests and is found to be in a good agreement. The present study shows that the magnitude and the distribution pattern are sensitive to the roughness of the road surface. The contact pressure induced by the dynamic impact due to a bumpy surface could be several times higher than that contributed from a smooth run-over. The hot spots in paving blocks are identified as a preliminary study of a research project regarding paving block durability. The tire model is composed of half a deformable tire skin, a rigid rim, a suspension, tire mass, and vehicle mass. The tire-block contact, the tire inner pressure, and the dynamic forces due to inertia are considered as the major loads. It is CPU efficient for less than 1200 CPU seconds required on a personal computer in one drive-through simulation. The proposed study shall be the initial investigation using direct pressure measurement on paving blocks. The lab test results will be fed into numerical model to analyze the failure mechanism which may lead to possible design improvements. Wide application can be expected in the future.

• Periodical: Applied Mechanics and Materials (Volumes 395-396)
• Pages: 524-528
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.395-396.524
• Online since: September 2013
• Authors: Chau Cho Yu*, Jun Wei Chang, Su Wei Hao
• Keywords: Dynamic Finite Element Analysis, Numerical Tire, Paving Block

References

[1] M. Shiraishi, H. Yoshinaga, N. Iwasaki, and K. Hayashi, Making FEM Tire Model and Applying it for Durability Simulation, The 6th International LS-DYNA User Conference (2001).

[2] P. Baranowski, P. Bogusz, P. Gotowicki, and J. Malachowski, Assessment of Mechanical Properties of Off Road Vehicle Tire: Coupons Testing and FE Model Development, Acta Mechanica et Automatica, Vol. 6, No. 2 (2012), p.17.

[3] Y. -C. Ting, A Study of the Quasi-Static Compression Behavior and the Dynamic Rolling Response for Advanced Automobile Tires, Master Thesis, Department of Aero Space Engineering, National Cheng-Kung University, Tainan, Taiwan (2006).

[4] C. Kolsch, Vertical Vehicle Dynamics on Soft Ground -Investigations with FEM-, Seoul 2000 FISITA World Automotive Congress, June 12-15, 2000, Seoul, Korea (2000).

[5] C. -C. Yu, J. Chang and W.H. Su, A Numerical Tire Model for the Road Surface Analysis, Conference on Computer Applications in Civil and Hydraulic Engineering, September 05-06, 2013, Yi-Lan County, Taiwan (2013).

[6] F.M. Nejad, Finite Element Analysis of Concrete Block Paving, The 7th International Conference on Concrete Block Paving (2003).