Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 12 of 12 for “"multiaxial loading"”.
-
A Comparison of Creep Theories for Multiaxial Loading of Polyethylene
Made available in DSpace on 2014-12-10T17:25:50Z (GMT). No. of bitstreams: 1 7000804.pdf: 1426540 bytes, checksum: a877de17f78c48170e56a4a983f453da (MD5) Previous issue date: 1969
-
Failure strength and mechanism of composite laminates under multiaxial loading conditions
… (BCC(n)) were tested in a biaxial compression loading condition to study failure behavior of notched laminates under a biaxial stress state. Failure mechanisms of notched and unnotched composite laminates have been studied based on the test data and failure surface examination.
-
A variable amplitude multiaxial fatigue life prediction method
… of a component subjected to variable amplitude multiaxial loading has been developed. It is based upon an extension of the strain-life approach which achieved success in correlating the fatigue lives of components subjected to uniaxial variable amplitude loading. In addition, it incorporates …
-
Strain analysis in glenohumeral capsule through finite element modelling
… the mechanical properties of the capsule under multiaxial loading were unknown we proposed an inverse finite elements based optimization routine to determine the material coefficients of the capsule. Several constitutive material models were evaluated to identify feasibility of convergence for …
-
Effects of nanoscale film thickness on apparent stiffness of and cell-mediated strains in polymers
… films are applied in various fields that require multiaxial loading conditions. The Hertzian contact models developed for linear elastic materials of semi-infinite thickness fail to accurately predict the elastic modulus E for these compliant materials. This makes it necessary to understand the …
-
Multiaxial fatigue damage model for random amplitude loading histories
In spite of many multiaxial fatigue life prediction methods proposed over decades of research, no universally accepted approach yet exists. A multiaxial fatigue damage model developed for approximately proportional random amplitude loading is proposed in this study. A normal strain based analysis …
-
Isothermal Fatigue Life Prediction Techniques
… for the identification and incorporation of loading multiaxiality was developed and validated against experimental results from testing of Aluminum 6061-T6 specimens at room temperature. Second, a unique isothermal-mechanical fatigue life testing capability was constructed and utilized in the …
-
The influence of cementation on liquefaction resistance of sands
… with conventional testing devices and simple loading paths. These devices are suspected of inducing premature failure in cemented soils, and are not capable of modeling the effects of multiaxial loading. In this investigation, there were two major objectives. The first involved the development …
-
Multi-Domain Multi-Material Topology Optimization of a Roller Coaster Vehicle Bogie Subject to Multiaxial Fatigue Constraints
… assemblies (bogies), specifically focusing on multiaxial fatigue topology optimization. Roller coaster bogies endure complex multiaxial loading conditions and require specialized fatigue constrained optimization due to their intricate loading, operating conditions, and repetitive load time …
-
In situ diffraction investigations of mechanisms that lead to path dependent mechanical behaviours of nickel-titanium shape memory alloys
… the numerical models. Out of them, lack of multiaxial experimental data to deconvolute and interpret the role of multiple deformation mechanism has been on the top priority. Historically, lack of experimental capabilities to study in situ deformation mechanism like phase transformation and …
-
High Cycle Fatigue Simulation using Extended Space-Time Finite Element Method Coupled with Continuum Damage Mechanics
… damage tolerance approaches are based on limited loading conditions and specimen geometry in the test. Extrapolation of such test data to the complicated parts with multiaxial loading conditions becomes very difficult. Motivated by these limitations, a multiple temporal scale computational …
-
Fatigue optimization of an induction hardened shaft under combined loading
… subjected to combined bending and torsional loading. Finite element analysis is used first to develop unit-load factors for generating stress-time histories, and then, employing thermo-elastic techniques, to determine the residual stresses resulting from induction hardening. These stress …