LunarEx - a proposal to cosmic vision (2009)
Smith, A., Crawford, I., Gowen, R.A., Ball, A.J., Barber, S.J., Church, P., ...
DEVELOPMENT AND VALIDATION OF MODEL FOR PENETRATION IN HYDROCODES (2008)
P Church, A Davies (qinetiq, P Church, A Davies, Key Words Hydrocode, ...
Summary The accurate simulation of ballistic penetration events requires the constitutive model to be capable of describing the behaviour of materials at high strain rates, high strains and high...
MoonLITE – Technological feasibility of the penetrator concept (2008)
Smith, A., Crawford, I. A., Ball, A. J., Barber, S. J., Church, P., Gao, Y., ...
Introduction: While the surface missions to the Moon of the 1960s and 1970s achieved a great deal, scientifically a great deal was also left unresolved. The recent plethora of lunar missions (flown...
Barton, D. C., Sturges, J. L., Mirza, M. S., Church, P.
Numerical simulations of the dynamic deformation and ductile fracture of notched tensile specimens have been carried out using the finite element hydrocode DYNA2D and advanced constitutive relations...
A Comparison of 3D Simulations Against Experiments for the Torsion Test (1997)
This paper describes simulation studies using the public domain version of the DYNA3D hydrocode of the torsion test, which by definition is a 3 dimensional test. The mesh resolution required to...
Walley, S., Church, P., Furth, M., Field, J.
It is very important to know what friction correction to make to stress-strain curves obtained in compression so that constitutive models of metals can be accurately checked. However, it recently...
Ductile Fracture of Pure Copper : An Experimental and Numerical Study (1997)
Mirza, M., Barton, D., Church, P., Sturges, J.
This paper describes the results of interrupted tensile tests carried out on 99.95% pure copper specimens over a range of stress triaxiality conditions. The tested specimens were sectioned and...
The Effect of Algorithm Form on Deformation and Instability in Tension (1997)
Equilibrium and flow equations have been developed for limited boundary conditions to describe deformation and localisation in tension. These equations have been used to study the influence of...
A Comparison of 3D Simulations Against Experiments for the Torsion Test (1997)
This paper describes simulation studies using the public domain version of the DYNA3D hydrocode of the torsion test, which by definition is a 3 dimensional test. The mesh resolution required to...
Walley, S., Church, P., Furth, M., Field, J.
It is very important to know what friction correction to make to stress-strain curves obtained in compression so that constitutive models of metals can be accurately checked. However, it recently...
Ductile Fracture of Pure Copper : An Experimental and Numerical Study (1997)
Mirza, M., Barton, D., Church, P., Sturges, J.
This paper describes the results of interrupted tensile tests carried out on 99.95% pure copper specimens over a range of stress triaxiality conditions. The tested specimens were sectioned and...
The Effect of Algorithm Form on Deformation and Instability in Tension (1997)
Equilibrium and flow equations have been developed for limited boundary conditions to describe deformation and localisation in tension. These equations have been used to study the influence of...
A Comparison of 3D Simulations Against Experiments for the Torsion Test (1997)
This paper describes simulation studies using the public domain version of the DYNA3D hydrocode of the torsion test, which by definition is a 3 dimensional test. The mesh resolution required to...
Walley, S., Church, P., Furth, M., Field, J.
It is very important to know what friction correction to make to stress-strain curves obtained in compression so that constitutive models of metals can be accurately checked. However, it recently...
Ductile Fracture of Pure Copper : An Experimental and Numerical Study (1997)
Mirza, M., Barton, D., Church, P., Sturges, J.
This paper describes the results of interrupted tensile tests carried out on 99.95% pure copper specimens over a range of stress triaxiality conditions. The tested specimens were sectioned and...
The Effect of Algorithm Form on Deformation and Instability in Tension (1997)
Equilibrium and flow equations have been developed for limited boundary conditions to describe deformation and localisation in tension. These equations have been used to study the influence of...
A wide range constitutive equation for medium and high strength steel (1994)
Goldthorpe, B., Butler, A., Church, P.
A Constitutive Equation has been determined for a medium strength steel and has been shown to have identical form to the modified Armstrong Zerilli equation used for iron. The strengthening mechanism...
A wide range constitutive equation for medium and high strength steel (1994)
Goldthorpe, B., Butler, A., Church, P.
A Constitutive Equation has been determined for a medium strength steel and has been shown to have identical form to the modified Armstrong Zerilli equation used for iron. The strengthening mechanism...
A wide range constitutive equation for medium and high strength steel (1994)
Goldthorpe, B., Butler, A., Church, P.
A Constitutive Equation has been determined for a medium strength steel and has been shown to have identical form to the modified Armstrong Zerilli equation used for iron. The strengthening mechanism...
Barton, D., Sturges, J., Mirza, M., Church, P.
Numerical simulations of the dynamic deformation and ductile fracture of notched tensile specimens have been carried out using the finite element hydrocode DYNA2D and advanced constitutive relations...
DEVELOPMENT AND APPLICATION OF HIGH STRAIN RATE CONSTITUTIVE MODELS IN HYDROCODES (1991)
A pre-requisite to the numerical modelling of warhead designs and concepts is a basic understanding of how materials behave under various loads, ranging from elastic to plastic through to...
Barton, D., Sturges, J., Mirza, M., Church, P.
Numerical simulations of the dynamic deformation and ductile fracture of notched tensile specimens have been carried out using the finite element hydrocode DYNA2D and advanced constitutive relations...
DEVELOPMENT AND APPLICATION OF HIGH STRAIN RATE CONSTITUTIVE MODELS IN HYDROCODES (1991)
A pre-requisite to the numerical modelling of warhead designs and concepts is a basic understanding of how materials behave under various loads, ranging from elastic to plastic through to...
Barton, D., Sturges, J., Mirza, M., Church, P.
Numerical simulations of the dynamic deformation and ductile fracture of notched tensile specimens have been carried out using the finite element hydrocode DYNA2D and advanced constitutive relations...
DEVELOPMENT AND APPLICATION OF HIGH STRAIN RATE CONSTITUTIVE MODELS IN HYDROCODES (1991)
A pre-requisite to the numerical modelling of warhead designs and concepts is a basic understanding of how materials behave under various loads, ranging from elastic to plastic through to...
Tine, J A, Lanar, D E, Smith, D M, Wellde, B T, Schultheiss, P, Ware, L A, ...
The highly attenuated NYVAC vaccinia virus strain has been utilized to develop a multiantigen, multistage vaccine candidate for malaria, a disease that remains a serious global health problem and for...
Tine, J A, Lanar, D E, Smith, D M, Wellde, B T, Schultheiss, P, Ware, L A, ...
The highly attenuated NYVAC vaccinia virus strain has been utilized to develop a multiantigen, multistage vaccine candidate for malaria, a disease that remains a serious global health problem and for...