Establishment of A Set of Similarity Prerequisite Conditions for Low-Cost Similitude Design of Structural System

Year : 2025 | Volume : 15 | Issue : 03 | Page : 1 15
    By

    Song Gun Kim,

  • Sol Song Pak,

  • Kwang Il Ri,

  • Yong Myong Song,

  • Jong Hyok Son,

  1. Associate Professor, Department of Mechanics, Kim Il Sung University, Pyongyang, DPR, Korea
  2. Professor, Department of Mechanics, Kim Il Sung University, Pyongyang, DPR, Korea
  3. Professor, Department of Mechanics, Kim Il Sung University, Pyongyang, DPR, Korea
  4. Associate Professor, Department of Mechanics, Kim Il Sung University, Pyongyang, DPR, Korea
  5. Professor, Department of Mechanics, Kim Il Sung University, Pyongyang, DPR, Korea

Abstract

Similitude theory and method is a branch of engineering to establish necessary and sufficient conditions for similarity among complex phenomena. It is of great significance to develop the theory and application method in a more comprehensive way so that the similitude theory can be widely applied to low-cost designs of modern complex structural systems When designing a similitude structural system with various loads and boundary conditions, including rotating machines, it is important to study the relationship between mechanical characteristics such as stress, deformation, displacement, and natural frequency at corresponding points of the prototype and similitude structure at present. This paper determined a set of similarity prerequisite conditions for low-cost similitude design of structural system with various loads and boundary conditions If these conditions are satisfied, the results are obtained that stress and deformation in similitude structure is the same as prototype, linear displacement is  (ratio of similitude) times of prototype, unknown  force is times, eigenvalue is  times, natural frequency is times, eigenvector is same, dynamic displacement is times, response time is  times of prototype And confirmed validity of suggested method through some examples. Multidisciplinary problems such as structural dynamics, structural mechanics and fluid mechanics were carefully and exactly considered to determine the similarity prerequisites This paper contributes to reducing time and cost of developing new similitude structural system on the basis of prototype.

Keywords: Similitude structure, prototype, similarity prerequisite condition, low-cost design, structural system

[This article belongs to Journal of Production Research & Management ]

How to cite this article:
Song Gun Kim, Sol Song Pak, Kwang Il Ri, Yong Myong Song, Jong Hyok Son. Establishment of A Set of Similarity Prerequisite Conditions for Low-Cost Similitude Design of Structural System. Journal of Production Research & Management. 2025; 15(03):1-15.
How to cite this URL:
Song Gun Kim, Sol Song Pak, Kwang Il Ri, Yong Myong Song, Jong Hyok Son. Establishment of A Set of Similarity Prerequisite Conditions for Low-Cost Similitude Design of Structural System. Journal of Production Research & Management. 2025; 15(03):1-15. Available from: https://journals.stmjournals.com/joprm/article=2025/view=230716


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Regular Issue Subscription Review Article
Volume 15
Issue 03
Received 04/07/2025
Accepted 06/09/2025
Published 17/09/2025
Publication Time 75 Days
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