Optimization of the circular manhole cover made of ductile cast iron using finite element method

Scientific paper - Original scientific paper

• Author: Martina Lovrenić-Jugović
• Author: Zoran Glavaš
• Author: Anita Štrkalj
• Author: Ljerka Slokar
• Author: Filip Radišić
• Author's institution: University of Zagreb; Faculty of Metallurgy
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Metallurgy

Abstract (english)

In this paper, in order to dimension the position and the number of vertical reinforcement, several numerical linear static simulations of bending circular manhole cover of ductile cast iron (grade EN-GJS-500-7) with 600 mm diameter are performed. The analysis of displacement and stress using the finite element method in the software package Autodesk Simulation Mechanical were conducted. Verification of numerical results for the solution of thin circular plate was performed with analytical bending solutions. After checking the numerical procedure on the thin circular plate, two circular vertical reinforcements were added on the underside: internal and external. Numerical simulations investigated the influence of the inner circular reinforcement position on the strength of the circular manhole cover, while equivalent stresses followed by energy theory of strength (von Mises) were monitored. Since maximal equivalent stresses remain on the plate by varying the position of the inner circular reinforcement, simulations with added radial reinforcements are performed. Finally, by optimizing the number of radial reinforcements, the optimum plate design is chosen.

• Keywords (english): circular manhole cover; vertical reinforcements; linear analysis; finite element method; ductile cast iron
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Publication title: Proceedings of the XXVth International Scientific and Technical Conference Foundry 2018
• Numbering: pp. 7-10
• p-ISSN: 2535-017X
• e-ISSN: 2535-0188
• URN:NBN: urn:nbn:hr:115:161278
• Publication: 2018
• Conference: Title: XXVth International Scientific and Technical Conference Foundry 2018; Location: Pleven, Bulgaria; Start date: 2018-04-18; End date: 2018-04-20; Assembly type: Lecture
• Document URL: http://bib.irb.hr/937619
• Type of resource: Text
• Publisher: Scientific-Technical Union of Mechanical Engineering
• Publishing place: Pleven
• Access conditions: Closed access
• Created on: 2019-07-09 10:12:12