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 10 of 10 for “"DYNA3D"”.
-
School bus crashworthiness
… IDEADYN was used as a translator to write a LS-DYNA3D input file. Full frontal and offset frontal impacts were simulated in LS-DYNA3D with an initial velocity of 56 km/hr against a rigid wall. Since hourglassing energy was high in the previous results, a higher order integration was done for all …
-
Crashworthiness of Side Impact Beams
… Ansys v5.4 was used for the static FEA while LS-Dyna3D v940 was used for the dynamic FEA.;The objectives of the project were to assess and then model the behaviour of the steel and composite side impact beams. This behaviour is in terms of both the beams' static and impact response. The beams …
-
Computational model of ductile erosion by single particle impact
… was developed in LS-INGRID and analyzed using LS-DYNA3D. The Aluminum metal model was used to simulate the experimental work of Sheldon. The results of the model were checked with experimental results of Sheldon and a close comparison was observed. Several parameters such as velocity of erodent, …
-
Particle breakage in sand blasting due to impact on ductile materials
… a transient dynamic analysis is performed in LS-DYNA3D. This study focuses mainly on the propagation of stress waves and the volume loss of the sand particle upon impacting an aluminum plate. Three different shapes of the sand particle and five different sizes with varying impact angles and …
-
Failure mechanisms in impact erosion of ductile materials
… and dynamic analysis performed using LS-DYNA3D to predict the erosion loss. Using suitable failure criteria the amount of material lost was predicted. For this purpose, a program written using AWK language was used to find the number of failed elements. The results of this model were …
-
Finite Element Analysis of Ship Collisions
… using the explicit non-linear FE code LS-DYNA3D. Various modeling alternatives are considered. The ability to model a complete ship-to-ship collision is developed incrementally starting with bow collisions with a rigid wall. A super-element (intersection model) approach is considered to …
-
Computational models of particle size effects on brittle oxide scale erosion
… were developed using IDEAS and analyzed using LS-DYNA3D. The aluminum oxide model was used to validate the computational model with the experimental work of Allan Levy. The results indicated the correlation with the experimental observations. The same procedure is extended to estimate the material …
-
Taylor Impact Test and Penetration of Reinforced Concrete Targets by Cylindrical Composite Rods
We use the three-dimensional finite element code DYNA3D to analyze two problems: (a) the normal impact of a cylindrical monolithic or composite rod against a smooth flat rigid target, (commonly known as the Taylor impact test), and (b) the penetration of composite and monolithic steel cylindrical …
-
Enhancement of crashworthiness in car-truck collisions using damped under-ride guard and composite crush elements
… of the car structure is further developed using DYNA3D and an elastic-plastic analysis of the car-to-under-ride guard is performed. The results obtained using the rigid body, lumped parameter model and the finite element analysis are discussed to illustrate the relative merits of the methods. The …
-
Analysis of Adiabatic Shear Banding in a Thick-Walled Steel Tube by the Finite Element Method
The initiation and propagation of adiabatic shear bands is analyzed numerically for an impulsively loaded thick-walled steel tube. A circumferential V-notch located at the outer surface of the center of the tube provides a stress concentration. The material is modeled as strain hardening, …