Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Sherrill B. Biggers"'
Autor:
Sherrill B. Biggers, De Xie
Publikováno v:
Journal of Sandwich Structures & Materials. 11:133-150
This study shows that a simple approach to stiffness tailoring of composite face sheets can improve the performance of sandwich panels under compressive loading when delaminations are present. The simple stiffness tailoring concept used here is to re
Autor:
De Xie, Sherrill B. Biggers
Publikováno v:
Acta Mechanica Solida Sinica. 21:62-72
This study addresses the effectiveness of a simple stiffness tailoring concept to delay damage initiation, control damage progression, and improve residual strength in tensile-loaded composite plates with a central circular cutout. The tailoring conc
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications. 222:15-28
In the present work, a ballistic material-model development approach is combined with transient non-linear dynamics simulations of the projectile/armour interactions to explore the armour-hard-facing potential of multi-walled carbon nanotube (MWCNT)
Autor:
Sherrill B. Biggers, De Xie
Publikováno v:
International Journal of Impact Engineering. 34:1047-1060
This paper describes an interface element to calculate the strain energy release rates based on the virtual crack closure technique (VCCT) in conjunction with finite element analysis (FEA). A very stiff spring is placed between the node pair at the c
Publikováno v:
Multidiscipline Modeling in Materials and Structures. 3:1-26
Common Aero Vehicles (CAVs) are relatively small‐size, un‐powered, self‐maneuvering vehicles equipped with a variety of weapons and launched from space. One of the major obstacles hampering a full the realization of the CAV concept is a present
Autor:
De Xie, Sherrill B. Biggers
Publikováno v:
Finite Elements in Analysis and Design. 42:977-984
This paper introduces an interface element to solve 2D progressive crack growth problems under mixed-mode loading. The interface element is developed to calculate the strain energy release rates based on the virtual crack closure technique (VCCT) in
Publikováno v:
Applied Surface Science. 252:5035-5050
Common aero vehicles (CAVs) are aerodynamically designed, (from orbit) re-entry, un-powered military vehicles planned to be used for deployment of the desired munitions with increased accuracy and range. In one of the currently considered designs of
Autor:
De Xie, Sherrill B. Biggers
Publikováno v:
Engineering Fracture Mechanics. 73:771-785
This paper proposes a simple, efficient algorithm to trace a moving delamination front with an arbitrary and changing shape so that delamination growth can be analyzed by using stationary meshes. Based on the algorithm, a delamination front can be de
Autor:
De Xie, Sherrill B. Biggers
Publikováno v:
Engineering Fracture Mechanics. 73:786-801
The interface element and VCCT process described in Part I of this two-part paper, developed to compute strain energy release rates of an arbitrary delamination front using non-orthogonal finite element meshes, are further investigated in this paper
Publikováno v:
Journal of Materials Science. 41:2309-2317
The effects of test temperature and a graphitization heat treatment on thermal and thermo-mechanical properties of a carbon-based foam material called CFOAM® are investigated experimentally. Thermal diffusivity is determined using a laser flash meth