Effect of Strain Rate on Ductile Fracture
Abstract
This report results from a contract tasking Institute for Fundamental Technological Research of the Polish Academy of Sciences as follows: The effect of strain rate on ductile fracture is one of the least understood phenomena in modern fracture mechanics. At the same time, information on ductile fracture under dynamic loading is very important for reliable prediction of fracture and fragmentation of high consequence structures. High-consequence structures are understood here as components of turbofan engines for fixed-wing aircraft and/or rotorcraft dynamic components. A comprehensive theoretical, experimental, and numerical research project will be undertaken to resolve some of the fundamental issues and construct a dynamic fracture locus suitable for engineering applications and implementation into the FE codes. It is envisioned that the project will be broken into three interrelated tasks: Hopkinson bar tensile fracture tests on small, flat specimens using a unique apparatus developed at IPPT; Drop tower fracture tests on specially designed specimens subjected to a combined shear/compression and shear/tension loading; Finite element simulation of dynamic experiments and construction of the dynamic fracture envelope for a few typical materials. The second and third task will be a joint endeavour between IPPT and MIT where the funding for the work at MIT will come from GE Global Research Center and the funding for the IPPT will come from this grant. No government furnished equipment or data will be used by the researchers at IPPT.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2006
- Accession Number
- ADA454288
Entities
People
- Jerzy Luckner
- Piotr Perzyna
- Ryszard B. Pecherski
- Stefan P. Gadaj
- Wojciech K. Nowacki
- Zdzislaw Nowak
Organizations
- Polish Academy of Sciences