A New Lindemann Melt Model for Cerium
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Melt↗
Engineering topics
Zocher, Marvin Anthony
Publications and source records attributed to Zocher, Marvin Anthony.
PHELIX Shallow Cassette Liner Performance Tests 1 and 2 Post-Shot Simulation Report
PHELIX shallow cassette liner performance Tests 1 (PHELIX No. 151) and 2 (PHELIX No. 156) were conducted on August 07, 2020, and September 16, 2020, respectively. The primary purpose for these tests was to assess liner performance within the new shallow cassette PHELIX design configuration. Specific goals included: (1) an assessment of liner performance in terms of velocity and symmetry (both axial and azimuthal), and (2) an assessment of our ability to accurately predict liner performance. Test 1 was conducted with a driving potential of 70 kV. Test 2 was conducted with a driving potential of 75 kV.
42 ENGINEERING↗
Electrical Breakdown in Gases: a Glimpse
The author of this document was motivated to write a review of electrical breakdown in gases. Considering the immense body of extant work in this field, conducting a thorough review is a huge undertaking. Moreover, the author had at his disposal a very (very!) short timeline within which to complete his review. Consequently, the result of his effort is more akin to a glimpse of the body of work, rather than a review of that body. With that admission being thus stated, the reader that is seeking a thorough review of electrical breakdown in gases is bound to be disappointed in what follows. However, the reader who seeks an almost thorough review of some of the most important fundamentals, plus suggestions as to where to look for additional information, may find what follows to be useful – this is the hope of the author.
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
Calibration of Melt, Shear Modulus, and Flow Stress Models for Cerium Subjected to Intensive Dynamic Loading
Calibration parameters are developed for melt, shear modulus, and flow stress models for cerium subjected to dynamic loading. Parametric calibration is developed for the Lindemann melt law and for the shear modulus and flow stress models of Steinberg, Cochran, and Guinan.
36 MATERIALS SCIENCE↗
Numerical Considerations in the Modeling of a High Explosive Cylinder Experiment Using an ALE Continuum Mechanics Code
A series of experiments involving the detonation of PBX 9501 encased in a copper cylinder are modeled with the objective of evaluating a proposed set of phenomenological parameters for the Wescott–Stewart–Davis reactive burn model. The numerical analysis is conducted using the Los Alamos continuum mechanics code FLAG. Numerical considerations pertaining to various aspects of modeling the experiments using FLAG are discussed. It is shown that use of the proposed set of phenomenological parameters results in predictions of free-surface velocity that match empirically measured velocities reasonably well.
36 MATERIALS SCIENCE↗