Instytut Podstawowych Problemów Techniki
Polskiej Akademii Nauk

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J.A. Rodriguez-Martinez



Ostatnie publikacje
1.  Moćko W., Rodriguez-Martinez J.A., Kowalewski Z.L., Rusinek A., Compressive Viscoplastic Response of 6082-T6 and 7075-T6 Aluminium Alloys Under Wide Range of Strain Rate at Room Temperature: Experiments and Modelling, STRAIN, ISSN: 0039-2103, Vol.48, pp.498-509, 201235p.
2.  Klepaczko J., Rusinek A., Rodriguez-Martinez J.A., Pęcherski R.B., Arias A., Modelling of thermo-viscoplastic behavior of DH-36 and Weldox 460-E structural steels at wide ranges of strain rates and temperatures, comparison of constitutive relations for impact problems, MECHANICS OF MATERIALS, ISSN: 0167-6636, Vol.41, No.5, pp.599-621, 2009

Streszczenie:
In this paper, the thermo-viscoplastic behaviour of DH-36 and Weldox-460-E steels is analyzed at wide ranges of strain rates and temperature. These materials are commonly used for naval applications. Thus, the may be subjected to a wide range of exploitation temperature and at the same time to high strain rates due to accidental impact or explosion. The thermo-viscoplastic behaviour of these materials has been modeled by application of RK (Rusinek-Klepaczko) constitutive relation. The comparison with other models well known in the literature has been studied.

Słowa kluczowe:
constitutive modelling, thermo-viscoplasticity, DH-36 steel, Weldox-460-E steel, impact processes, FE numerical simulations, perforation process

Afiliacje autorów:
Klepaczko J. - IPPT PAN
Rusinek A. - inna afiliacja
Rodriguez-Martinez J.A. - inna afiliacja
Pęcherski R.B. - IPPT PAN
Arias A. - inna afiliacja
32p.
3.  Rusinek A., Rodriguez-Martinez J.A., Klepaczko J., Pęcherski R.B., Analysis of thermo-visco-plastic behaviour of six high strength steels, MATERIALS AND DESIGN, ISSN: 0261-3069, DOI: 10.1016/j.matdes.2008.07.034, Vol.30, No.5, pp.1748-1761, 2009

Streszczenie:
In this paper the thermo-visco-plastic behaviour of six high strength steels is analyzed in a wide range of strain rates and temperature. The steels belong to two well-known versions of steels: three ferritic steels: HSLA-65, DH-36 and Wedox 460-E and three austenitic steels: Nitronic-50, Uranus B66 and Al-6XN.
Micro-mechanism of plastic deformation in the case of ferritic steels is dominated by dislocation's gliding. In the case of austenitic steels the twinning appears that modifies the material's plastic properties. In the present paper the RK (Rusinek-Klepaczko) constitutive relation is evaluated for modelling of the plastic behaviour of six steels which represent these two different deformation mechanisms.

Słowa kluczowe:
ferritic steels, austenitic steels, RK Rusinek - Klepaczko model, dislocation glide, twining, thermo-visco-plasticity

Afiliacje autorów:
Rusinek A. - inna afiliacja
Rodriguez-Martinez J.A. - inna afiliacja
Klepaczko J. - IPPT PAN
Pęcherski R.B. - IPPT PAN
27p.
4.  Rodriguez-Martinez J.A., Rusinek A., Klepaczko J., Pęcherski R.B., Extension of R-K constitutive relation to phase transformation phenomena, MATERIALS AND DESIGN, ISSN: 0261-3069, Vol.30, No.7, pp.2513-2520, 2009

Streszczenie:
In this paper an extension of the Rusinek-Klepaczko (RK) constitutive relation is presented. The new formulation proposed, allows defining the phase transformation effect observed on macroscopic scale using a phenomenological approach. The key point is to introduce in the original formulation of RK model a new stress component based on evolution of martensite, which takes into account strain, strain rate and temperature effects. Analytical predictions of the xtended constitutive relation are compared with experimental results for 301Ln2B steel.

Słowa kluczowe:
RK model, phase transformation, austenitic steel

Afiliacje autorów:
Rodriguez-Martinez J.A. - inna afiliacja
Rusinek A. - inna afiliacja
Klepaczko J. - IPPT PAN
Pęcherski R.B. - IPPT PAN
27p.

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