Application of Thermo-Bimaterial Effect in Designing of Snap-Fit Joints

• Autorzy: Golewski P. , Sadowski T.

Identyfikatory

DOI

10.24425/amm.2019.129499

• Języki publikacji: EN

Abstrakty

EN

Snap-fit connections have been used for many years in various fields of technology and everyday objects. They often have complex shapes, which is allowed by the processing technology of the polymers from which they are made, but they are not designed to carry loads. Changing the material to a metal or fiber composite allows these types of joints to be used as replacements for rivets or screws, but there are problems with the closing technique – an increase in closing force due to the large Young’s modulus ofthese materials relative to polymers without reinforcement. One of the methods to solve this problem may be the use of a thermo-bimetallic effect consisting in heating both or one of the connection parts to the appropriate temperature. This kind of treatment results in deflection of the beam of the clip (Fig. 1), followed by assembly with zero force or less in relation to the case without heating.The paper presents the results of numerical simulations for the connection in which the beam of the clip consisted of two materials: (1) a fiber composite designed to carry loads, (2) thin metal layer tied with the composite and designed to create a thermo-bimetallic effect. In the case of this solution, the main parameter is the difference in coefficients of linear thermal expansion of both materials. The paper presents results for two cases of connection work: closing and opening. The calculations were carried out in the Abaqus/Standard solver using thermal-displacement steps.

Słowa kluczowe

EN

snap fit joint; numerical simulation; bi-material

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2019
• Tom: Vol. 64, iss. 3
• Strony: 1095--1100
• Opis fizyczny: Bibliogr. 34 poz., rys., tab., wzory

Twórcy

autor

Golewski P.

• Lublin University of Technology, Department of Solid Mechanics, Faculty of Civil Engineering and Architecture, 40 Nadbystrzycka Str., 20-618 Lublin, Poland

autor

Sadowski T.

• Lublin University of Technology, Department of Solid Mechanics, Faculty of Civil Engineering and Architecture, 40 Nadbystrzycka Str., 20-618 Lublin, Poland

Bibliografia

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Uwagi

EN

1. Financial support of the National Centre for Research and Development (Poland) – Project “Block Structures – Mechanical joining innovations to replace conventional fasteners in aerostructures”, contract No INNOLOT/I/5/NCBR/2013 is gratefully acknowledged. This work was financially supported by Ministry of Science and Higher Education (Poland) within the statutory research number S/20/2018.

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).