Soft Matter - Viscoelasticity, Creep and Stress Relaxation
In this free online course on soft matter, study the effects of viscoelasticity, creep and stress relaxation.
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You will be introduced to the study of soft matter (or soft condensed matter) and explore the two aspects that make up material linearity. Then move onto analyzing the creep and stress relaxation functions and different mechanical analogies. The demonstrations, problems, examples and assessment questions in this instructor-led video-based course, are designed to provide you with a comprehensive foundation in advanced aspects of soft matter.
You will study the definition of soft condensed matter and viscoelasticity. Then, the creep phenomenon will be discussed, which describes a continued straining or flow under constant stress. You will explore the concept of ‘linear response’, which describes a scenario where the material displays both the linearity of scale and the superposition of separate responses for all histories.
Next, you will learn about creep and stress relaxation functions. You will gain insight into the Deborah number, see what the pitch drop experiment by the University of Queensland demonstrated, and you will discover the importance of understanding the difference between aging and non-aging material. Finally, you will study the response of elastic and classical viscous fluid and mechanical analogy examples. This course will be of interest to mechanical engineering students, or professionals in the fields of fluid mechanics or continuum mechanics.Start Course Now
Viscoelasticity - Learning Outcomes
Introduction to Soft Matter
Response of Elastic Solids
Response Classical Viscous Fluid
Viscoelasticity - Lesson Summary
Creep and Stress Relaxation
Creep and Stress Relaxation - Learning Outcomes
Creep and Stress Relaxation
Creep and Stress Relaxation Functions
Linearity of Scale
Mechanical Analogue Examples
Creep and Stress Relaxation - Lesson Summary
Upon successful completion of this course, you should be able to:
- Discuss the response of viscoelastic material to step stress
- Explain the concept of linear scaling
- Describe classes of materials that make up soft matter
- Explain the Deborah number and time-scales
- Describe the step-stress response of elastic solids
- Discuss the step-stress response of classical viscous fluid
- Explain the creep and stress relaxation functions
- Describe the mechanical analogies of spring and Dashpot constructs
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