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Simulation of vehicular impacts with safety-shaped barrier
(1987)
In the research described here, a vehicle/barrier crush model was developed and combined with a vehicle model to simulate impacts with the concrete safety-shaped barriers (CSSB). The crush model accounts for the effects ...
Measurement of three-dimensional vehicular motion to assess the dynamic performance of safety structures
(1992)
Measurements system of three-dimensional motion of an impacting vehicle were studied. Through the review of existing systems, a nine accelerometer array was found to be a both stable and economical system. This system ...
Mechanical characterization of nonlinear laminated composites with traverse crack growth
(1992)
A work potential based analysis was used to model damage related material nonlinearities in graphite-epoxy laminates. Two work potentials were incorporated. One potential was related to sub-ply damage, such as shear banding ...
Failure prediction of beryllium cross-rolled sheets by incorporating closure of cubic polynomial tensor
(1992)
Thin beryllium sheets are known to fail catastrophically when deformed by out-of-plane loadings. Primary objective of this study is to approach the overall problem of failure prediction from a macroscopic point of view. ...
Nonlinear three dimensional analysis of downdrag on pile groups
(1992)
The downdrag on pile groups was investigated by using a numerical analysis and an analytical study. The emphasis was on quantifying the reduction of downdrag on piles in a group due to the group effect. The case of a single ...
Rational analytical method to design a yielding highway traffic barrier for use on and near a bridge structure
(1973)
In this study, safety is considered to be of utmost importance in the design of at traffic barrier on and near a bridge. This paper presents an analytical method to assist the highway engineer in the rational design of a ...
Development of empirical-mechanistic based faulting models in the design of plain jointed concrete pavements
(1995)
An in-depth study of factors and causes of faulting distress are presented. The results of a laboratory and a finite element investigation explain the behavior of joints in jointed concrete pavement systems in terms of ...
An investigation of high-occupancy vehicle lane cost effectiveness
(1987)
This dissertation documents the process used to derive guidelines for estimation of HOV lane project benefit/cost ratios. An extensive radial freeway computer simulation model database was combined with an economic analysis ...
An interaction theory for multi-layered bonded composite beam systems with shear deformation effects
(1987)
An approximate partial interaction theory is presented for the analysis of multi-layered composite beams connected by means of adhesion. The formulation includes the effects of elastic slip, differential deflection, ...
Development of a predictive model for pavement roughness on expansive clay
(1994)
Expansive clays are the major cause of differential movements in shallow foundations. In highway pavements they are responsible for cyclic distortion of the riding surface resulting in a loss of road handling ability and ...