@inproceedings{59441,
  abstract     = {{<jats:p>Abstract. Accurate Finite Element Modeling (FEM) of joints is essential in the design of complex mechanical systems such as automotive body-in-white (BIW) structures, as it plays a critical role in evaluating their performance. Although well-established techniques exist for modeling rotationally symmetric joints, there remains a significant gap in effectively modeling non-rotationally symmetric joints. These joints are particularly relevant in the automotive BIW, where they can better accommodate anisotropic loading conditions. In this study, strategies for modeling non-rotationally symmetric joints were explored using finite element simulations in LS-DYNA. The findings demonstrate that discrete beam elements can capture the anisotropic characteristics of such joints. Two models were tested: a single-beam model for stiffness periodicity every 90°, and a three-beam model for stiffness periodicity every 120°. Force responses, stress distribution, and sheet bending behaviors were analyzed, confirming that discrete beam elements can accurately represent direction-dependent stiffness. These results establish a foundation for developing advanced joint modeling strategies in complex mechanical systems.</jats:p>}},
  author       = {{Devulapally, Deekshith Reddy and Tröster, Thomas}},
  booktitle    = {{Materials Research Proceedings}},
  issn         = {{2474-395X}},
  location     = {{Paderborn}},
  publisher    = {{Materials Research Forum LLC}},
  title        = {{{Modelling strategies for non-rotationally symmetric joints}}},
  doi          = {{10.21741/9781644903551-21}},
  volume       = {{52}},
  year         = {{2025}},
}

@inproceedings{59897,
  abstract     = {{<jats:p>This paper discusses the influence of joint orientation with non-rotationally symmetric geometry, on load distribution and structural behavior. The focus is on understanding how changes in the alignment of individual joints affect the distribution of load, neighboring joints, and the overall performance of the component. Lap shear specimens with multiple joints arranged in a line are analyzed to explore these effects. Simplified models are used to model the joints in finite element simulations, allowing for efficient yet accurate analysis of the load distribution and structural response under varying joint orientations. Variations in joint orientation result in measurable changes in the distribution of forces on adjacent joints, influencing their behavior and that of the overall assembly. Experimental validation confirms the numerical results, providing deeper insights into the interaction between individual joints and their surroundings. This work contributes to the development of systematic approaches for optimizing the design of components with non-rotationally symmetric joints. The study highlights the importance of considering directional properties of joints in designing structural components.</jats:p>}},
  author       = {{Devulapally, Deekshith Reddy and Steinfelder, Christian and Tröster, Thomas and Brosius, Alexander}},
  booktitle    = {{MATEC Web of Conferences}},
  issn         = {{2261-236X}},
  location     = {{Lisabon,Portugal}},
  publisher    = {{EDP Sciences}},
  title        = {{{Impact of non-rotationally symmetric joint orientation on neighbouring joints and component performance in lap shear specimens}}},
  doi          = {{10.1051/matecconf/202540801035}},
  volume       = {{408}},
  year         = {{2025}},
}

@inproceedings{55638,
  abstract     = {{<jats:p>Abstract. Traditionally, joints are cylindrical and rotationally symmetric. In the present study, non-rotationally symmetric joints are used for joining steel and Glass mat-reinforced thermoplastic sheets (GMT). In addition, the study also analyzes the impact of non-rotational symmetric joint rotation on the load-bearing capacity. Single lap joint specimens were fabricated using the In-Mold assembly technique for joining steel sheets with GMT. Tensile shear tests were performed on different orientations of the joint geometry, and it was observed that changing the joint orientation influences the load-bearing capacity. The joints are constitutively modeled using beam elements and the influence of joint rotation on load distribution is examined through a static simulation study. </jats:p>}},
  author       = {{Devulapally, Deekshith Reddy and Martin, Sven and Tröster, Thomas}},
  booktitle    = {{Materials Research Proceedings}},
  issn         = {{2474-395X}},
  publisher    = {{Materials Research Forum LLC}},
  title        = {{{Non-rotationally symmetric joints – Mechanisms and load bearing capacity}}},
  doi          = {{10.21741/9781644903131-183}},
  year         = {{2024}},
}