Results 61 to 70 of about 6,620 (226)

Ratchet analysis of structures under a generalised cyclic load history [PDF]

open access: yes, 2014
This paper introduces a new approach based upon the Linear Matching Method in order to obtain the ratchet limit of structures subjected to an arbitrary thermo-mechanical load history. This method varies from the traditional Linear Matching Method ratchet
Chen, Haofeng   +2 more
core   +1 more source

Consumers' Environmental Awareness and Firms' Managerial Delegation Contracts Under Emission Tax Policies

open access: yesScottish Journal of Political Economy, EarlyView.
ABSTRACT This study considers consumers' environmental awareness of polluting firms' managerial delegation contracts and compares the effects of committed and time‐consistent emission tax policies. It reveals that when environmental performance (EP) incentives prevail, sales performance (SP) incentives depend on the emission tax type and competition ...
Lili Xu, Yuntong Yin, Sang‐Ho Lee
wiley   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

open access: yesExperimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Calculation of a lower bound ratchet limit part 1 – Theory, numerical implementation and verification [PDF]

open access: yes, 2013
It is important to be able to calculate the ratchet limit of a component when performing integrity assessments of plant components. This paper details the addition of a lower bound ratchet limit calculation to the Linear Matching Method. The extension of
Chen, Haofeng   +2 more
core   +1 more source

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

open access: yesBiological Reviews, Volume 101, Issue 3, Page 1406-1462, June 2026.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz   +6 more
wiley   +1 more source

Self-loosening behavior of bolt in curvic coupling due to materials ratcheting at thread root

open access: yesAdvances in Mechanical Engineering, 2019
This article presents the bolt self-loosening mechanism in curvic coupling due to the structural ratcheting under cyclic loading. Finite element simulations are carried out under several loading conditions with different preloads and cyclic torque ...
Xiangjun Jiang   +3 more
doaj   +1 more source

Strain range dependent cyclic hardening of 08Ch18N10T stainless steel-experiments and simulations [PDF]

open access: yes, 2019
This paper describes and presents an experimental program of low-cycle fatigue tests of austenitic stainless steel 08Ch18N10T at room temperature. The low-cycle tests include uniaxial and torsional tests for various specimen geometries and for a vast ...
Fumfera, Jaromír   +4 more
core   +1 more source

Hybrid Data‐Driven and Physics‐Informed Learning of Cyclic Plasticity For Pipe Steel

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT An efficient and explainable machine learning (ML) approach is presented, replacing conventional material models based on the radial return mapping (RRM) algorithm for the constitutive modeling of cyclic plasticity in 3D. The application of transfer learning, based on an existing model for a separate class of steel, leads to a significant ...
Stefan Hildebrand, Sandra Klinge
wiley   +1 more source

LOW CYCLE FATIGUE LIFE PREDICTIONS OF 15CrMoR PARENT MATERIAL AND WELD METAL

open access: yesJixie qiangdu, 2016
Butt-weld specimen has been made for coke drum material 15 Cr MoR. For both parent and weld materials,uniaxial tensile tests and uniaxial ratcheting tests have been conducted under different temperatures.
MA Kai   +3 more
doaj  

Ratcheting of granular materials [PDF]

open access: yes, 2003
We investigate the quasi-static mechanical response of soils under cyclic loading using a discrete model of randomly generated convex polygons. This response exhibits a sequence of regimes, each one characterized by a linear accumulation of plastic ...
D. Kolymbas   +4 more
core   +2 more sources

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