Rebound Property in Low Velocity Impact of Two Equivalent Balls

Abstract

The present study focuses on an impact phenomenon of two spheres and its rebound property. The collision of two spheres is a fundamental problem with impact phenomenon. The coefficient of restitution characterizes the property of impact phenomenon and has been estimated in general by experiment. In addition, it has been tried to estimate the coefficient by analytical and numerical methods. Considering body deformation, the body is deflected rapidly in collision and the strain rate occurred in the body is significantly high. It is well known the yield stress of the specific industrial material depends on the strain rate. However, it has not been proved the relationship between the coefficient of restitution and the strain rate in details yet. The present paper discusses the coefficient of restitution in low velocity impact of two equivalent balls. The impact experiments were conducted for the balls with different diameters by a pendulum impact apparatus. And the balls are numerically analyzed based on the finite element method considering the dependence of yield stress on strain rate as the material property of the balls. In conclusion, the strain rate decreases with the increment of the ball diameter and, it causes the coefficient of restitution to decrease.

Authors and Affiliations

Eijiro Inamura, Hirofumi Minamoto, Shozo Kawamura

Keywords

Related Articles

Content Based Satellite Cloud Image Retrieval Using Texture Features

This paper proposes, the retrieving satellite cloud images from satellite cloud database images using the texture features. The traditional image retrieval technique is inefficient in retrieving these images. Content-bas...

Enhancement of performance of Air Conditioning system using Fined HPHX with staggered array

The air conditioners generally use less than 35% of their capacity in dehumidification and the rest in cooling. If more dehumidification is required, the air must be overcooled to remove moisture and then must be reheate...

Use of Fuzzy Set Theory in Environmental Engineering Applications: A Review

Methods of solving the identified environmental problems, considering mathematical rigorous alternative assessment of environmental component process using fuzzy logic and approximate reasoning, are described by various...

Object-Based Crop Mapping Using Multi-Temporal Landsat 8 Imagery

This study aimed to map crop pattern using object-based classification technique within a Mediterranean agricultural land in Turkey. Many Mediterranean land covers show similar spectral characteristics that make it diffi...

Basis for an effective climate change adaptation: Case small Mexican agriculture

Mexico is considered one of the world's most vulnerable countries to climate change effects. Its geographical location and climatic, orographic and hydrological conditions contribute considerably to this situation. The o...

Download PDF file
  • EP ID EP391240
  • DOI 10.9790/9622-0705040512.
  • Views 122
  • Downloads 0

How To Cite

Eijiro Inamura, Hirofumi Minamoto, Shozo Kawamura (2017). Rebound Property in Low Velocity Impact of Two Equivalent Balls. International Journal of engineering Research and Applications, 7(5), 5-12. https://europub.co.uk/articles/-A-391240