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Papers by Paras Kumar

Research paper thumbnail of Study and Development of Road Traffic Noise Model

dspace.thapar.edu

Page 1. STUDY AND DEVELOPMENT OF ROAD TRAFFIC NOISE MODEL A Thesis Submitted in partial fulfillme... more Page 1. STUDY AND DEVELOPMENT OF ROAD TRAFFIC NOISE MODEL A Thesis Submitted in partial fulfillment of the requirement for the award of degree of MASTER OF ENGINEERING IN CAD/CAM & ROBOTICS Submitted By MUKESH CHANDRA MISHRA (Roll No. ...

Research paper thumbnail of Enhanced computational homogenization techniques for modelling size effects in polymer composites

Computational Mechanics, 2021

Several experimental investigations corroborate nanosized inclusions as being much more efficient... more Several experimental investigations corroborate nanosized inclusions as being much more efficient reinforcements for strengthening polymers as compared to their microsized counterparts. The inadequacy of the standard first-order computational homogenization scheme, by virtue of lack of the requisite length scale to model such size effects, necessitates enhancements to the standard scheme. In this work, a thorough assessment of one such extension based on the idea of interface energetics is conducted. Systematic numerical experimentation and analysis demonstrate the limitation of the aforementioned approach in modeling mechanical behavior of composite materials where the filler material is much stiffer than the matrix. An alternative approach based on the idea of continuously graded interphases is introduced. Comprehensive evaluation of this technique by means of representative numerical examples reveals it to be the appropriate one for modeling nano-composite materials with differen...

Research paper thumbnail of Study and Development of Road Traffic Noise Model

dspace.thapar.edu

Page 1. STUDY AND DEVELOPMENT OF ROAD TRAFFIC NOISE MODEL A Thesis Submitted in partial fulfillme... more Page 1. STUDY AND DEVELOPMENT OF ROAD TRAFFIC NOISE MODEL A Thesis Submitted in partial fulfillment of the requirement for the award of degree of MASTER OF ENGINEERING IN CAD/CAM & ROBOTICS Submitted By MUKESH CHANDRA MISHRA (Roll No. ...

Research paper thumbnail of Enhanced computational homogenization techniques for modelling size effects in polymer composites

Computational Mechanics, 2021

Several experimental investigations corroborate nanosized inclusions as being much more efficient... more Several experimental investigations corroborate nanosized inclusions as being much more efficient reinforcements for strengthening polymers as compared to their microsized counterparts. The inadequacy of the standard first-order computational homogenization scheme, by virtue of lack of the requisite length scale to model such size effects, necessitates enhancements to the standard scheme. In this work, a thorough assessment of one such extension based on the idea of interface energetics is conducted. Systematic numerical experimentation and analysis demonstrate the limitation of the aforementioned approach in modeling mechanical behavior of composite materials where the filler material is much stiffer than the matrix. An alternative approach based on the idea of continuously graded interphases is introduced. Comprehensive evaluation of this technique by means of representative numerical examples reveals it to be the appropriate one for modeling nano-composite materials with differen...

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