Mechanical behavior of high-strength bolts under different strain rates
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Timo Roth
Timo Roth, born in 1993, studied mechanical engineering from 2012 to 2015 at Darmstadt University of Applied Sciences, Germany. From 2015 till 2017, he completed a master’s degree in mechanical engineering at Clausthal University of technology, Germany. From 2017 till 2019, he worked as a project engineer for structural durability at IME Aachen GmbH, Germany. Since 2020, he is working as a research assistant at the Institute for Machine Elements, Design and Manufacturing at Technical University Bergakademie Freiberg, Germany.
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Robert Szlosarek
Robert Szlosarek, born in 1987, studied mechatronics from 2005 to 2010 at the University of Applied Sciences in Zittau, Germany. Afterward, he did his Ph.D. at the Graz University of Technology, Austria. Currently, he is working as a researcher at the Institute for Machine Elements, Design and Manufacturing at Technical University Bergakademie Freiberg, Germany. His main field of interest is the stress and fatigue analysis of machine elements.
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Matthias Kröger
Matthias Kröger, born in 1968, studied mechanical engineering from 1988 to 1994 at the University of Hannover, Germany. At the same university, he finished his Ph.D. in 2001. From 1999 to 2008, he was the Engineer in Chief of the Institute of Mechanics at the University of Hannover, Germany. Since 2008, he is full professor at Technical University Bergakademie Freiberg, Germany. His fields of research are tribology, fatigue, and crashworthiness.
Abstract
Due to their advantages, bolted connections are irreplaceable in machine, plant, and vehicle construction. High-strength bolts can be subjected to (high) dynamic loads during operation. Unfortunately, the knowledge of the strain rate dependence of the mechanical properties of high-strength bolts is very limited. Therefore, tensile tests were carried out at 11 different strain rates between 0.001 and 30 s−1 on high-strength bolts of size M6 of strength class 8.8. In addition, notch-free tensile specimens were manufactured from the bolts and also loaded at different strain rates in order to quantify the influence of the thread on the mechanical properties of the material. The tensile tests were analyzed in terms of yield strength, ultimate tensile strength, elongation at fracture, and energy absorption capacity. For this purpose, a test setup was developed and manufactured on which the bolts were axially loaded until fracture. It was found that the tensile strength and yield strength of bolts only increase above a certain strain rate. The elongation at fracture of complete bolts and also unnotched specimens is independent of the strain rate. For unnotched specimens, both the strength is dependent on the strain rate over the investigated strain rate range.
About the authors
Timo Roth, born in 1993, studied mechanical engineering from 2012 to 2015 at Darmstadt University of Applied Sciences, Germany. From 2015 till 2017, he completed a master’s degree in mechanical engineering at Clausthal University of technology, Germany. From 2017 till 2019, he worked as a project engineer for structural durability at IME Aachen GmbH, Germany. Since 2020, he is working as a research assistant at the Institute for Machine Elements, Design and Manufacturing at Technical University Bergakademie Freiberg, Germany.
Robert Szlosarek, born in 1987, studied mechatronics from 2005 to 2010 at the University of Applied Sciences in Zittau, Germany. Afterward, he did his Ph.D. at the Graz University of Technology, Austria. Currently, he is working as a researcher at the Institute for Machine Elements, Design and Manufacturing at Technical University Bergakademie Freiberg, Germany. His main field of interest is the stress and fatigue analysis of machine elements.
Matthias Kröger, born in 1968, studied mechanical engineering from 1988 to 1994 at the University of Hannover, Germany. At the same university, he finished his Ph.D. in 2001. From 1999 to 2008, he was the Engineer in Chief of the Institute of Mechanics at the University of Hannover, Germany. Since 2008, he is full professor at Technical University Bergakademie Freiberg, Germany. His fields of research are tribology, fatigue, and crashworthiness.
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Research ethics: Not applicable.
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Informed consent: Not applicable.
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Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interests: The authors state no conflict of interest.
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Research funding: None declared.
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Data availability: The raw data can be obtained on request from the corresponding author.
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© 2025 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Influence of initial delamination length on the interlaminar fracture toughness energy – Mode I – of unidirectional GFRP
- Impact behavior of sandwich composites with S2-glass/epoxy and PVC foam under low velocity loading
- Cold deformation behavior and the microscopic mechanisms of a L605 centrifugal cast tube
- Experimental and numerical analysis of the life performance enhancement of rod ends used in automotive steering devices
- Uniaxial tensile and low cycle fatigue test for calibration of hardening rule parameters using inverse analysis and pipe shrinking simulation
- Effects of different gas mixtures and welding speeds on laser welding of AlMg1SiCu T6 aluminum alloys with filler metal
- Mechanical behavior of high-strength bolts under different strain rates
- Temperature–related assessment of the fatigue creep behavior of the additively manufactured magnesium alloy WE43 in the compression regime
- Wear test for 16MnCr5 with a spherical diamond-coated mounted point
- Weld properties of plasma arc joined austenitic stainless steels
- Comparison of disc brake pads for truck front wheels based on SAE standard experiments
- Friction and wear properties of Uhmwpe and Peek polymers
- Microstructural and mechanical characterization of fiber laser welded quench-partitioning steels
- Artificial neural network–infused polar fox algorithm for optimal design of vehicle suspension components
- Effects of co-fillers on the tensile and hardness properties of polymer composites
Artikel in diesem Heft
- Frontmatter
- Influence of initial delamination length on the interlaminar fracture toughness energy – Mode I – of unidirectional GFRP
- Impact behavior of sandwich composites with S2-glass/epoxy and PVC foam under low velocity loading
- Cold deformation behavior and the microscopic mechanisms of a L605 centrifugal cast tube
- Experimental and numerical analysis of the life performance enhancement of rod ends used in automotive steering devices
- Uniaxial tensile and low cycle fatigue test for calibration of hardening rule parameters using inverse analysis and pipe shrinking simulation
- Effects of different gas mixtures and welding speeds on laser welding of AlMg1SiCu T6 aluminum alloys with filler metal
- Mechanical behavior of high-strength bolts under different strain rates
- Temperature–related assessment of the fatigue creep behavior of the additively manufactured magnesium alloy WE43 in the compression regime
- Wear test for 16MnCr5 with a spherical diamond-coated mounted point
- Weld properties of plasma arc joined austenitic stainless steels
- Comparison of disc brake pads for truck front wheels based on SAE standard experiments
- Friction and wear properties of Uhmwpe and Peek polymers
- Microstructural and mechanical characterization of fiber laser welded quench-partitioning steels
- Artificial neural network–infused polar fox algorithm for optimal design of vehicle suspension components
- Effects of co-fillers on the tensile and hardness properties of polymer composites
