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Mechanical Systems

Mechanical Systems

Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically...

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Related Experiment Video

Updated: May 6, 2026

Creating a Structurally Realistic Finite Element Geometric Model of a Cardiomyocyte to Study the Role of Cellular Architecture in Cardiomyocyte Systems Biology

Creating a Structurally Realistic Finite Element Geometric Model of a Cardiomyocyte to Study the Role of Cellular Architecture in Cardiomyocyte Systems Biology

Published on: April 18, 2018

Evolution of Cardiac Models Toward Recreating Biologically Relevant Multiaxial Mechanical Stimuli.

Anushka Dey¹, Leda Klouda², Anita Saraf^1,3

¹Heart and Vascular Institute, Division of Cardiology, Department of Pediatrics, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.

Tissue Engineering. Part B, Reviews

|August 21, 2025

Summary

Recreating cardiac mechanical forces in lab cultures is key for tissue regeneration and cardiovascular disease therapies. This review examines in vitro devices that mimic in vivo heart forces, highlighting current limitations.

Keywords:

biomechanical forces bioreactors cardiac cells cardiac tissue engineering in vitro devices

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Last Updated: May 6, 2026

Creating a Structurally Realistic Finite Element Geometric Model of a Cardiomyocyte to Study the Role of Cellular Architecture in Cardiomyocyte Systems Biology

Creating a Structurally Realistic Finite Element Geometric Model of a Cardiomyocyte to Study the Role of Cellular Architecture in Cardiomyocyte Systems Biology

Published on: April 18, 2018

Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction

Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction

Published on: February 13, 2021

In Silico Clinical Trials for Cardiovascular Disease

In Silico Clinical Trials for Cardiovascular Disease

Published on: May 27, 2022

Area of Science:

Biomedical Engineering
Cardiovascular Physiology
Regenerative Medicine

Background:

Mechanical forces critically impact cardiac physiology at cellular and whole-heart levels.
Understanding these forces is essential for developing effective cardiac tissue regeneration strategies.
Current in vitro models face challenges in fully replicating in vivo cardiac biomechanics.

Purpose of the Study:

To review clinical understanding of cardiac mechanical forces.
To evaluate in vitro device designs that mimic cardiac mechanical forces.
To assess the evolution and limitations of bioreactors for recreating in vivo cardiac conditions.

Main Methods:

Literature review of clinical understanding of cardiac biomechanics.
Analysis of in vitro device designs for mimicking cellular and tissue-level mechanical forces.
Evaluation of bioreactor technology advancements in recapitulating multiaxial forces.

Main Results:

In vitro devices are progressing in mimicking cardiac mechanical forces.
Bioreactor evolution shows promise in replicating in vivo conditions.
Significant limitations persist in fully recreating the complexity of in vivo cardiac physiology in vitro.

Conclusions:

Accurate recreation of in vivo cardiac mechanical forces in vitro is crucial for advancing cardiac tissue engineering.
Further development of bioreactor technology is needed to overcome current limitations.
Bridging the gap between in vitro models and in vivo physiology is vital for therapeutic breakthroughs.