News

In a recent collaboration with colleagues from INSA Toulouse, we have developed a virtual image correlation method for the generation of image-based isogeometric twins of lattice structures with varying cross-section beams.

In our latest article in collaboration with colleagues from Arizona State University, we have demonstrated the application of 3D beam models for the simulation of 3D printed beam lattice structures.

Congratulations to our research associate Iman Valizadeh for winning a “Best Research Presentation Award” at the 4DMDA conference!

The Cyber-Physical Simulation group is offering two courses in the up-coming winter term 2022-2023: The lecture “Introduction to the Finite Element Method” and the tutorial “Machine Learning in Solid Mechanics”.

In collaboration with Rogelio Ortigosa & Jesús Martínez-Frutos from TU Cartagena, we extended our physics-augmented neural network constitutive models to electro-elastic material behavior.

Our latest article on “Mixed isogeometric collocation for geometrically exact 3D beams with elasto-visco-plastic material behavior and softening effects” was just published in CMAME.

An article in collaboration with the KLuB institute at TU Darmstadt was just published in the journal “Mechanics of Advanced Materials and Structures”.

Dr. Sumudu Herath will spend a DAAD-funded research stay at the CPS until September.

New publication in “Thin-walled Structures” based on cooperation with our guest scientist Dr. Shojaee.

Congratulations to Iman Valizadeh for the publication of his latest article in the International Journal of Mechanical Sciences!

The Cyber-Physical Simulation group is offering two courses during summer term 2022: The lecture “Multiscale Methods in Computational Mechanics ” and the tutorial “Finite Element Simulation in Structural and Solid Mechanics”.

Our latest article, which was just published in the journal “Structural and Multidisciplinary Optimization” integrates our isogeometric methods for the optimization of the centerline curve and cross-sectional design of nonlinear 3D beams and lattice structures. It is freely available through Open Access under https://doi.org/10.1007/s00158-021-03131-7.

Our group's latest article on “Polyconvex anisotropic hyperelasticity with neural networks” was just published in the reputable Journal of the Mechanics and Physics of Solids (JMPS). The article is freely available within the next 50 days at https://authors.elsevier.com/a/1eA8z57ZjziFF . Otherwise, the accepted version can also be found on arXiv: https://arxiv.org/abs/2106.14623

Our latest article on “Material modeling for parametric, anisotropic finite strain hyperelasticity based on machine learning with application in optimization of metamaterials” was just published in the International Journal for Numerical Methods in Engineering . The article is now freely available under Open Access at http://doi.org/10.1002/nme.6869

Prof. Weeger and the CPS group are founding members of the 4D Printing Society, which just launched its new website and forum at https://4dprintings.com .

The CPS group is offering the masters lecture Introduction to the Finite Element Method (6 CP, 4 SWS) in winter term 2021-2022. It will be carried out in a blended learning format with learning units in Moodle and interactive lecture sessions.

Congratulations to our PhD student Iman Valizadeh, who lead the research on the “Tailoring of functionally graded hyperelastic materials via grayscale mask stereolithography 3D printing”, which was just published in the journal Additive Manufacturing . The work was a collaborative effort with the suppuort of the IDD institute of TU Darmstadt. The manuscript can be freely accessed for 50 days at https://authors.elsevier.com/c/1dbK67tcTWdlNm

Our latest article on “Nonlinear multiscale simulation of elastic beam lattices with anisotropic homogenized constitutive models based on artificial neural networks” was just published in the journal Computational Mechanics . The research was lead by our former Master student Til Gärtner (now at TU Delft) and former Postdoc Mauricio Fernández (now at ACCESS Aachen). The article is freely available under Open Access at https://doi.org/10.1007/s00466-021-02061-x

As part of our collaboration with SUTD in Singapore and HKUST in Hong Kong, the paper “KnitKit: A flexible system for machine knitting of customizable textiles” was just published in the reputable ACM Transactions on Graphics. KnitKit is a flexible and customizable system for the computational design and production of functional, multi-material, and three-dimensional knitted textiles. The work was lead by Dr. Georges Nader and will be presented at the ACM SIGGRAPH conference in August.

We are happy to share that the article “Numerical homogenization of second gradient, linear elastic constitutive models for cubic 3D beam-lattice metamaterials” has been published in the International Journal of Solids and Structures . The manuscript is can be accessed at https://authors.elsevier.com/a/1cznq4kE0PLR1 (50 days free access).

Prof. Weeger is offering a course on “ Multiscale Methods in Computational Mechanics ” (4 CP, 16-73-3134) in summer term 2021. The course is fully digital course with all materials provided in Moodle and starts on Tuesday, April 13, 2021.

The GAMM Annual Meeting “GAMM 2020@21” is hosted by the University of Kassel as an online conference from March 15-19, 2021 ( gamm202021.de ). The Cyber-Physical Simulation group is participating with three talks.

We are happy to share that the article “Anisotropic hyperelastic constitutive models for finite deformations combining material theory and data-driven approaches with application to cubic lattice metamaterials” was just published in the journal Computational Mechanics . The contribution was prepared by our Postdoc Mauricio Fernández in collaboration with Prof. Kersting from the computer science department and Prof. Böhlke from KIT. It combines theory-based approaches from continuum mechanics with the application of machine learning methods. The manuscript can be accessed at DOI 10.1007/s00466-020-01954-7 (OpenAccess).

The CPS group is offering the masters lecture Introduction to the Finite Element Method (6 CP, 4 SWS) in winter term 2020-2021. Due to the Covid-19 related restrictions, the course is going to be taught digitally only.

We are happy to share that the article “Nonlinear isogeometric multiscale simulation for design and fabrication of functionally graded knitted textiles” was just published in the journal Composites Part B: Engineering . The collaborative effort with the Digital Manufacturing and Design Centre at the Singapore University of Technology can be accessed at DOI 10.1016/j.compositesb.2020.108416 . The accepted version is also available for download on our website in the publications section.