An experimental study of design strategies for stiffening thin plates under compression

Irving E. Ramirez Chavez, Cameron Noe, Vigneshwaran Sekar, Shainil Jogani, Siddharth Israni, Dhruv Bhate

Research output: Contribution to conferencePaperpeer-review

Abstract

Increasing stiffness and failure loads while minimizing mass is useful in many engineering applications, including the design of thin plates and shells. In this paper, the performance of thin plates using a range of stiffening approaches were studied for the specific instance of compressive loading. Periodic, graded, stepped, “Voronoi” stochastic, and topologically optimized patterns were explored. These stiffening designs were realized using different software tools and manufactured with the Selective Laser Sintering (SLS) process. These 3D printed specimens were tested under compression to assess their mechanical response. Videos of these tests were recorded to study the shape of the failure modes. This data was analyzed to determine the performance of the different stiffener designs, in comparison to the performance of baseline plates without any stiffening. The study concludes with a discussion of the results and their implications for stiffening thin plates, showing that triangular and stochastic stiffening strategies show particular promise in increasing specific compressive stiffness and specific buckling load.

Original languageEnglish (US)
Pages1893-1907
Number of pages15
StatePublished - 2019
Event30th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2019 - Austin, United States
Duration: Aug 12 2019Aug 14 2019

Conference

Conference30th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2019
CountryUnited States
CityAustin
Period8/12/198/14/19

Keywords

  • Compression
  • Design for Additive Manufacturing
  • Plate
  • Shell
  • Stiffener
  • Topology Optimization

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

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