7 papers
Specimen design for material parameter identification using topology optimization
Adeline Wihardja, Kaushik Bhattacharya
Constitutive relations close the equations of continuum mechanics, and serve as a surrogate for a material in the design and engineering process. They are often specified in a para…
Characterization of the soft behavior of nematic elastomers over a range of temperature and strain rates
Alice Kutsyy, Adeline Wihardja, Victoria Lee +1
Nematic elastomers are a particular class of liquid crystal elastomers (LCEs) that exhibit both liquid-crystalline order and rubber (entropic) elasticity. This combination makes th…
High Strain Rate Behavior of Liquid Crystal Elastomers
Adeline Wihardja, Juan Carlos Nieto Fuentes, Daniel Rittel +1
Liquid crystal elastomers are rubbery solids that couple liquid crystalline order and deformation. This coupling leads to properties that are attractive for a number of application…
Learning Memory and Material Dependent Constitutive Laws
Kaushik Bhattacharya, Lianghao Cao, George Stepaniants +2
We propose and study a neural operator framework for learning memory- and material microstructure-dependent constitutive laws for heterogeneous materials. We work in the two-scale…
Constitutive relations from images
Adeline Wihardja, Kaushik Bhattacharya
Constitutive relations close the balance laws of continuum mechanics and serves as the surrogate for a material in the design and engineering process. The problem of obtaining the…
Comprehensive Study of -essence Model: Dynamical System Analysis and Observational Constraints from Latest Type Ia Supernova and BAO Observations
Saddam Hussain, Sarath Nelleri, Kaushik Bhattacharya
We constrain the parameters of the -essence scalar field model with inverse square and exponential potentials using data sets including Pantheon+SHOES and the Dark Energy Survey…