Second Order Accurate Finite Difference Methods

reportActive / Technical Report | Accession Number: ADA216822 | Open PDF

Abstract:

Existing second order accurate finite difference methods have been evaluated for application to finite deformation transient dynamic response problems in solids. A new second order accurate finite difference technique has been developed. This is a two-step technique that can be used with deformable Lagrangian meshes. The technique has been developed by using the concepts of contour differences and MacCormack methods. The second order techniques have been applied to study many problems including dynamic poynting effect problems, interaction of stress waves and cracks, beams, with nonstructured masses and stiffened shells.

Author(s):
Hanagud, S.
Author Organization(s):
GEORGIA INST OF TECH ATLANTA
Descriptive Note:
Final rept. 30 Jun 1981-31 Jan 1984,
Supplementary Note:
DOI: 10.21236/ADA216822
Pagination:
0015

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
GIT-E-16-621, GIT-E-16-611
Contract/Grant Number(s):
AFOSR-81-0224
Task Number(s):
B1
Project Number(s):
2307
Monitor Series:
TR-89-1856, AFOSR
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_1_Force Support; JCA_5.3.4_Develop Courses of Action; JCA_5.3.5_Analyze Courses of Action; JCA_1.2_Force Preparation; JCA_5.3.3_Develop Strategy; JCA_4.6_Engineering; JCA_3.2_Engagement; JCA_3_Force Application; JCA_1.2.6_Concepts; JCA_1.3_Human Capital Management; JCA_3.2.1_Kinetic Means
Communities of Interest:
Air Platforms
Descriptor(s):
*DYNAMIC RESPONSE, *FINITE DIFFERENCE THEORY, CRACKS, STIFFENING, LAGRANGIAN FUNCTIONS, SOLIDS, MESH, STRESS WAVES, DEFORMATION, INTERACTIONS, SHELLS(STRUCTURAL FORMS)
Field(s)/Group(s):
Theoretical Mathematics, Mechanics
Keyword(s):
PE61102F, WUAFOSR2307B1
Report Date:
1984 Aug 20