Physics and Mechanics of Ice

In the programme of the symposium was written: "The International Union of Theoretical and Applied Me chanics has taken the initiative to organize the sympo sium. As the name of IUTAM implies, the organization brings forward achievements within the field of theore tical mechanics for application in science and engineer ing. According to the rules of IUTAM that only invited persons can attend, all lecturers and participants have been ap pOinted by the members of the scientific committee. To facilitate contact among the attending persons, it has been decided to restrict the total number to 85 persons including the lecturers. Only one session is planned, making it possible for everybody to attend all lectures. Most scientists and engineers have realized that the knowledge attained by extensive basic research is essen tial in order to solve technological problems. In the process of acquiring this knowledge we often fail to un derstand that scientific progress is only achieved by two main principles: (1) By studying the scientific litera ture and applying or improving the theories in order to predict behaviour and forces correctly, or (2) by re jecting existing theories and developing new ways to cope with the problem, resulting in a more differenti ated and, hopefully, more exact theory. Ice seems to be a simple material, but it is in fact so complex and strange that it is only in the latest dec ades that we have come to know some of the natural laws governing its behaviour.

Texte du rabat

In the programme of the symposium was written: "The International Union of Theoretical and Applied Me­ chanics has taken the initiative to organize the sympo­ sium. As the name of IUTAM implies, the organization brings forward achievements within the field of theore­ tical mechanics for application in science and engineer­ ing. According to the rules of IUTAM that only invited persons can attend, all lecturers and participants have been ap­ pOinted by the members of the scientific committee. To facilitate contact among the attending persons, it has been decided to restrict the total number to 85 persons including the lecturers. Only one session is planned, making it possible for everybody to attend all lectures. Most scientists and engineers have realized that the knowledge attained by extensive basic research is essen­ tial in order to solve technological problems. In the process of acquiring this knowledge we often fail to un­ derstand that scientific progress is only achieved by two main principles: (1) By studying the scientific litera­ ture and applying or improving the theories in order to predict behaviour and forces correctly, or (2) by re­ jecting existing theories and developing new ways to cope with the problem, resulting in a more differenti­ ated and, hopefully, more exact theory. Ice seems to be a simple material, but it is in fact so complex and strange that it is only in the latest dec­ ades that we have come to know some of the natural laws governing its behaviour.

Contenu
Some Promising Trends in Ice Mechanics.- The Development and Application of Multimodal Ice Failure Theory.- Numerical Model of Penelope Ice Viscometer Flows.- Characteristics of Iceberg Mechanics.- Constitutive Relations for the Non Elastic Deformation of Polycrystalline Ice.- Modelling the Interaction between Ice and Ships.- Finite Element Method Simulation of Large Ice Mass Flow Behaviour.- Experience Gained By Use of Extensive Ice Laboratory Facilities in Solving Ice Problems.- Dynamic Ice Forces on an Inclined Structure.- The Rheological Behaviour of Ice at Small Strains.- Critical Stress Intensity Factor (KIC) Measurements at High Loading Rates for Polycrystalline Ice.- Theory of Floating Ice Sheets.- On the Buckling Force of Floating Ice Plates:.- Implications of Structure Width for Design Ice Forces.- A Danish Icebreaker Design.- Creep and Relaxation in Floating Ice Platforms - an Analysis of Case Histories.- Mechanical Properties of Polycrystalline Ice.- Mechanical Model of Creep of Polycrystalline Ice with Cracking Activity.- The Application of Fracture Mechanics to Ice Problems.- Bending and Buckling of a Wedge on an Elastic Foundation.- Plastic Limit Analysis of Sheet Ice Loads on Conical Structures.- Flow of Temperate Ice in a Vertical Shaft with Rough Wall Surfaces.- Analytical Approach for the Determination of Ice Forces Using Plasticity Theory.- Ice Forces on Piles.- Failure of Sea Ice by Repeated Compression.- Discussion of Papers.