An ice material model addressing the influence of strain rate, temperature, confining pressure and porosity
Paper i proceeding, 2019

In this paper a three dimensional ice material model is developed, with several key factors affecting ice behavior are considered. This material model is based on viscoelastic theory, comprising elastic, delayed elastic and viscous components. Strain rate effect on the ice behavior is embedded in the viscous term, and the time dependent characteristic is reflected by the delayed elastic term. The viscous term is based on the improvement of Glen’s law, which is originally related to temperature variation. The pressure hardening and pressure softening phenomena are included through improving this relation. This model also takes into account the sensitivity of porosity induced mainly by air bubbles and brine volume. The proposed ice material model is programed by Fortran and implemented in LS-Dyna. The accuracy of the proposed ice material model is verified through simulations of tri-axial and uniaxial compressive experiments, comparing the predicted ice strength with experimental results.

ice modelling

Ice mechanics

Författare

Y Xu

Shanghai Jiao Tong University

ZhiQiang Hu

Newcastle University

Jonas Ringsberg

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

G Chen

Shanghai Jiao Tong University

Pentti Kujala

Aalto University

Trends in the Analysis and Design of Marine Structures - Proceedings of the 7th International Conference on Marine Structures (MARSTRUCT 2019)

2638-647x (ISSN) 2638-6461 (eISSN)

66-75

Trends in the Analysis and Design of Marine Structures - Proceedings of the 7th International Conference on Marine Structures (MARSTRUCT 2019)
Dubrovnik, Croatia,

Chalmers styrkeområde Transport – finansiering 2018

Chalmers, 2018-01-01 -- 2018-12-31.

Drivkrafter

Hållbar utveckling

Styrkeområden

Transport

Energi

Fundament

Grundläggande vetenskaper

Ämneskategorier

Annan materialteknik

Farkostteknik

Mer information

Senast uppdaterat

2019-05-07