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Related Experiment Video

Updated: May 15, 2026

Impacts of Free-falling Spheres on a Deep Liquid Pool with Altered Fluid and Impactor Surface Conditions

Impacts of Free-falling Spheres on a Deep Liquid Pool with Altered Fluid and Impactor Surface Conditions

Published on: February 17, 2019

Physically plausible balloon dynamics via position-based constraints and geodesic-weighted forces.

Jong-Hyun Kim¹

¹College of Software and Convergence (Dept. of Artificial Intelligence, Design Technology), Graduate School of Electrical and Computer Engineering, Inha University, Michuhol-gu, Incheon‌‌, South Korea.

|May 13, 2026

Summary

This summary is machine-generated.

This study introduces a fast balloon dynamics simulation using Position-Based Dynamics (PBD). The method efficiently models inflation, deflation, and rotation for real-time interactive applications.

Related Experiment Videos

Last Updated: May 15, 2026

Impacts of Free-falling Spheres on a Deep Liquid Pool with Altered Fluid and Impactor Surface Conditions

Impacts of Free-falling Spheres on a Deep Liquid Pool with Altered Fluid and Impactor Surface Conditions

Published on: February 17, 2019

Area of Science:

Computer Graphics
Physics Simulation
Computational Mechanics

Background:

Simulating deformable objects like balloons is computationally intensive.
Existing methods often rely on complex fluid-structure coupling or computationally expensive simulations.

Purpose of the Study:

To develop a lightweight and efficient method for real-time balloon dynamics simulation.
To enable realistic inflation, deflation, and rotation behaviors without explicit fluid simulation.

Main Methods:

Utilizes the Position-Based Dynamics (PBD) framework.
Combines Bernoulli-derived reaction forces with PBD constraints to avoid fluid simulation.
Models rotation as global rigid-body motion and handles shape changes via constraint-based position correction.

Main Results:

Achieves real-time performance on high-resolution models.
Accurately captures characteristic balloon behaviors like inflation, deflation, and rotation.
Demonstrates consistent performance across diverse mesh geometries and mass distributions.

Conclusions:

The proposed PBD-based method offers an efficient alternative to traditional fluid-structure coupling for balloon dynamics.
The approach is suitable for real-time interactive applications including games and VR/AR.
Provides a computationally efficient yet physically plausible simulation of balloon deformation and motion.