## A 3D Octal Planetary Model – video preview

This is a video preview to an older post. [sociallocker][/sociallocker]Continue Reading

## 3-Body Planetary System with Options – video preview

A video preview to an older model. [sociallocker] [/sociallocker]Continue Reading

## A Legacy 3D Octal Planetary Model

This is an older model of planetary motion in 3D containing eight planets. A video preview can be watched here. [sociallocker][/sociallocker]Continue Reading

## Casual Introduction to Numerical Methods – spring-mass-damper system model – part#5

In this tutorial, most of the calculations for the numerical simulation a SMD (spring-mas-damper) system will be consolidated into a single formula, the coordinate formula. In this case, in order to calculate the coordinate at the end of a any time step, we will need just the coordinates from the previous two time steps and of course the input parameters (constants). TheseContinue Reading

## Casual Introduction to Numerical Methods – spring-mass-damper system model – part#4

This tutorial explains the principles to generating animation for the spring-mass-damper system analyzed in the previous presentations. [sociallocker][/sociallocker] A casual approach to numerical modeling – part #4 – a Spring-Mass-Damper-System – creating the animation by George Lungu – We are trying to generate animation for the system sketched above knowing the deviation from the equilibrium function of time. This deviation isContinue Reading

## Casual Introduction to Numerical Methods – a spring-mass-damper system model – part#3

Here is the third part of a tutorial in both elementary dynamics and numerical methods. It is written at a basic level and it shows you how to set up a dynamic model for numerical solving of simple differential equations. The dynamic model makes use of an infinite loop, which make the calculations advance in time. Instead of a large tableContinue Reading

## Casual Introduction to Numerical Methods – a spring-mass-damper system model – part#2

Here is the second part of a tutorial in both elementary dynamics and numerical methods. It is written at a  basic level and it shows you how to solve a system of difference equations in an Excel table. It also starts to explain how to animate the model. [sociallocker][/sociallocker] A casual approach to numerical modeling – the Spring-Mass-Damper System – part 2.Continue Reading

## Casual Introduction to Numerical Methods – a spring-mass-damper system model – part#1

Here is the first part of a casual tutorial in both elementary dynamics and numerical methods. It is written at a very basic level and it shows you how to solve a system of difference equations with a pencil and a paper and perhaps a pocket calculator to speed things up. A casual approach to numerical modeling – the Spring-Mass-Damper-System –Continue Reading

## 3-Body Planetary System with Options

Here is a 3-body system with 3D graphics. This model  works at about 30 frames/second in Excel 2003 on a modern PC. In Excel 2007 it will run 10-15 times slower. I know 2010 is a lot faster than 2007. I need to add  few more features. I am also thinking of adding a 3D gravitational surface map later (likeContinue Reading

## Triple Spring-Mass-Damper System

This is the model of a triple spring-mass-damper system in excel. [sociallocker][/sociallocker]Continue Reading

## Double Spring-Mass-Damper System

This is an animated model of a double spring-mass-damper system in excel. [sociallocker][/sociallocker]Continue Reading

## Simple Spring-Mass-Damper System

This is the model of a simple spring-mass-damper system in excel. [sociallocker][/sociallocker]Continue Reading