Results 11 to 20 of about 213,665 (198)

A Strain Hardening and Softening Constitutive Model for Hard Brittle Rocks

Applied Sciences, 2023
To study the strain hardening and softening mechanism for hard brittle rocks, a strain hardening and softening constitutive model for hard brittle rocks is developed.
Junchi Chen, Weihua Wang, Longfeng Chen
doaj   +1 more source

Research on the 2A11 Aluminum Alloy Sheet Cyclic Tension–Compression Test and Its Application in a Mixed Hardening Model

Metals, 2023
The increasing application of aluminum alloy, in combination with the growth in the complexity of components, provides new challenges for the numerical modeling of sheet materials.
Guang Chen, Changcai Zhao, Haiwei Shi, Qingxing Zhu, Guoyi Shen, Zheng Liu, Chenyang Wang, Duan Chen   +7 more
doaj   +1 more source

Influence of strain-hardening models and slopes on the predicted residual stresses in structural steel S235 weldments

Journal of Materials Research and Technology, 2022
The objective of this research is to systematically understand how strain-hardening models and phase- and temperature-dependent strain-hardening slopes affect the computed residual stresses in single-pass welded joints made of the widely used structural ...
Jiamin Sun, Thomas Nitschke-Pagel, Klaus Dilger   +2 more
doaj   +1 more source

Measurement and modelling of strain-path dependent anisotropic hardening behaviors of high strength steels subjected to pre-strains

Journal of Materials Research and Technology, 2023
Anisotropic yielding and hardening behaviors are important parts of a constitutive model for material formability and strength assessment. In this work, the work hardening characteristics of a high strength steel sheet after it was subjected to 2% and 5%
Thein Lin Aung, Ninshu Ma, Yoshitaka Okitsu, Seiji Hayashi, Kenji Takada, Tadashi Naito   +5 more
doaj   +1 more source

Effect of Constitutive Equations on Springback Prediction Accuracy in the TRIP1180 Cold Stamping

Metals, 2017
This study aimed to evaluate the effect of constitutive equations on springback prediction accuracy in cold stamping with various deformation modes. This study investigated the ability of two yield functions to describe the yield behavior: Hill’48 and ...
Ki-Young Seo, Jae-Hong Kim, Hyun-Seok Lee, Ji Hoon Kim, Byung-Min Kim   +4 more
doaj   +1 more source

Dislocation subgrain structures and modeling the plastic hardening of metallic single crystals [PDF]

, 2010
A single crystal plasticity theory for insertion into finite element simulation is formulated using sequential laminates to model subgrain dislocation structures.
Bronkhorst, C. A., Hansen, B. L., Ortiz, M.   +2 more
core   +1 more source

Basic Formability Research and Experimental Test of Glass Fiber Reinforced Aluminium Laminates

Journal of Aeronautical Materials, 2017
The basic formability of Glare 2A, Glare 2B and Glare 3 laminates was investigated by unidirectional tensile and three-point bending tests to explore the formability characteristics of Glare.
TIAN Jingming, LI Huaguan, LIU Cheng, TAO Gang, ZHANG Liqing, ZHENG Xingwei, LIU Hongbing, TAO Jie   +7 more
doaj   +1 more source

Effects of Hardening Model and Variation of Elastic Modulus on Springback Prediction in Roll Forming

Metals, 2019
In this paper, the uniaxial loading−unloading−reloading (LUR) tensile test was conducted to determine the elastic modulus depending on the plastic pre-strain. To obtain the material parameters and parameter of Yoshida-Uemori’s kinematic
Jihad Naofal, Hassan Moslemi Naeini, Siamak Mazdak   +2 more
doaj   +1 more source

Non-Unified Constitutive Models for the Simulation of the Asymmetrical Cyclic Behavior of GH4169 at Elevated Temperatures

Metals, 2022
The tensile, creep, fatigue and creep-fatigue tests of the nickel-based superalloy GH4169 were carried out. According to the deformation characteristics of GH4169 alloy, the Ohno-Karim kinematic model (O-K model) can be used to describe the tensile ...
Xuteng Hu, Shuying Zhuang, Haodong Zheng, Zuopeng Zhao, Xu Jia   +4 more
doaj   +1 more source

Characterising gross plastic deformation in design by analysis [PDF]

, 2005
An investigation of three simple structures is conducted to identify and characterise the condition of gross plastic deformation in pressure vessel design by analysis.
Donald Mackenzie, Gerdeen, Hongjun Li, Lubliner, Moffat, Muscat, Save, Townley   +7 more
core   +1 more source