Jagannadh Boddapati

I am Jagannadh Boddapati. I am currently pursuing my Ph.D. in Mechanical Engineering at Caltech, accompanied by a minor in Computer Science. My research is focused on the data-driven discovery of structure-property relations in anisotropic metamaterials under the supervision of Prof. Chiara Daraio. Prior to joining Caltech, I earned my Bachelor’s with Honors in Mechanical Engineering with a minor in Microelectronics from the Indian Institute of Technology Madras in 2018. My undergraduate research focused on shape-morphing piezo composites, conducted under the guidance of Prof. Ratna Kumar Annabattula.

I possess a well-rounded skill set encompassing hands-on experimental expertise in areas such as additive manufacturing, material testing with computational skills spanning finite element analysis, machine learning, and theoretical knowledge in applied mathematics areas like linear analysis, differential equations. While I am proficient across these domains, my strength lies in leveraging computational tools to tackle complex interdisciplinary fundamental and applied research problems.

I am passionate about understanding the mechanical behavior of a diverse range of materials at various length and time scales. I developed this interest in solid mechanics while finding answers to many questions that occurred to me at various periods of my studies. The exhilarating “aha” moments when I successfully unraveled these inquiries and the delights from comprehending the underlying physics are the key factors that motivate me to delve deeper into this field. In a way, stress serves as my stress-burster.

selected publications

JMPS
Single-test evaluation of directional elastic properties of anisotropic structured materials

Jagannadh Boddapati* , Moritz Flaschel* , Siddhant Kumar , Laura De Lorenzis , and Chiara Daraio

Journal of the Mechanics and Physics of Solids, 2023

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When the elastic properties of structured materials become direction-dependent, the number of their descriptors increases. For example, in two-dimensions, the anisotropic behavior of materials is described by up to 6 independent elastic stiffness parameters, as opposed to only 2 needed for isotropic materials. Such high number of parameters expands the design space of structured materials and leads to unusual phenomena, such as materials that can shear under uniaxial compression. However, an increased number of properties descriptors and the coupling between shear and normal deformations render the experimental evaluation of material properties more challenging. In this paper, we propose a methodology based on the virtual fields method to identify six separate stiffness tensor parameters of two-dimensional anisotropic structured materials using just one tension test, thus eliminating the need for multiple experiments, as it is typical in traditional methods. The approach requires no stress data and uses full-field displacement data and global force data. We show the accuracy of our method using synthetic data generated from finite element simulations as well as experimental data from additively manufactured specimens.
@article{boddapati2023single, title = {Single-test evaluation of directional elastic properties of anisotropic structured materials}, author = {Boddapati*, Jagannadh and Flaschel*, Moritz and Kumar, Siddhant and De Lorenzis, Laura and Daraio, Chiara}, journal = {Journal of the Mechanics and Physics of Solids}, volume = {181}, pages = {105471}, year = {2023}, doi = {https://doi.org/10.1016/j.jmps.2023.105471}, publisher = {Elsevier}, }