Computing the composite coefficient of restitution for inelastic impact of dissimilar bodies

Stronge, W. J.; Sofi, Ardalan R.; Ravani, Bahram

doi:10.1016/j.ijimpeng.2019.103333

Cited by 10 publications

(12 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…45 In addition, the greater the energy loss, the smaller the COR. 11,13 Thus, the COR increases initially before steadying after four cycles as the energy loss stabilizes.…”

Section: Development Of Cor Correction Matrixmentioning

confidence: 99%

“…Thus, the ratio (energy COR) 11,13 between the initial impact energy and the rebound energy is constant at different drop heights. That leads to the conclusion that the COR can be considered independent of the drop height.…”

Section: Effect Of Drop Heightmentioning

confidence: 99%

“…It is first used in the building field, including sand 1 and concrete, 2 then applied to pipes 3 and metal sheets 4 and finally used in packaging engineering. 5 The impact object, [6][7][8] impact base, 9,10 impact velocity, [11][12][13][14] number of impacts 15,16 and impact orientation 17 all have an influence on the COR. There are three primary categories: displacement COR, 1,4 velocity COR 12,15 and energy COR.…”

Section: Introductionmentioning

confidence: 99%

“…There are three primary categories: displacement COR, 1,4 velocity COR 12,15 and energy COR. 11,13 A packaging system-base collision can be quantified by the velocity COR, which is defined as the ratio of the rebound velocity to the initial velocity:…”

Section: Introductionmentioning

confidence: 99%

“…The impact object, 6–8 impact base, 9,10 impact velocity, 11–14 number of impacts 15,16 and impact orientation 17 all have an influence on the COR. There are three primary categories: displacement COR, 1,4 velocity COR 12,15 and energy COR 11,13 …”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Exploring factors affecting the conversion of the coefficient of restitution to equivalent free fall drop height

Lin,

Ge,

Qian

et al. 2023

Packag Technol Sci

View full text Add to dashboard Cite

The coefficient of restitution (COR) is used to estimate the equivalent free fall drop height of packaging during handling and transportation. Various experimental studies were designed to explore factors affecting the conversion of the COR to equivalent free fall drop height. These factors include the number of drops, drop height, drop orientation, drop base, temperature and humidity on the COR. The results indicate that the number of drops and drop orientation are the two most influential factors affecting COR values. As the package undergoes more drops, the COR increases. Among the various orientations, the COR is largest for flat drops, followed by edge and corner orientations. Within flat drops, a smaller impact area results in a smaller COR. Manufacturing joints and the flats, edges and corners adjacent to manufacturing joints tend to yield smaller COR values. A COR correction matrix was developed to correct the conventional COR calculation. This matrix allows engineers to refine COR values based on the number of drops and drop orientations in the field. The matrix‐corrected equivalent free fall drop heights demonstrated an average accuracy of 96%. Compared to the conventional COR calculation method, it effectively reduces errors by a factor of 2–3.

show abstract

“…45 In addition, the greater the energy loss, the smaller the COR. 11,13 Thus, the COR increases initially before steadying after four cycles as the energy loss stabilizes.…”

Section: Development Of Cor Correction Matrixmentioning

confidence: 99%

Section: Effect Of Drop Heightmentioning

confidence: 99%