By popular demand I am coming back to Excel after a long hiatus. This is an update of an older model previously presented on this blog. > I added a few features to the roller coaster model as follows: 1) Performance log 2) All sorts of colors and color scheme selection 3) Speed control 4) Coaster length adjustment 3) Ground… Read More... "Excel Roller Coaster Update #1"

## Modeling atomic diffusion and polymerization – coding an Excel animated model

part#1 part#2 part#3 https://youtu.be/AZe9ocCvfHY part#4 Read More... "Modeling atomic diffusion and polymerization – coding an Excel animated model"

## Animated Asynchronous Electric Motor Model in MS Excel

This is an animation of an asynchronous electric motor in Microsoft Excel. You can download the model by clicking on the icon below and trying to run it. What is an electric motor and how does an electric motor work? An electric motor is part of a larger class of devices known as electric machines. In order to define an… Read More... "Animated Asynchronous Electric Motor Model in MS Excel"

## Power Management: An Animated Buck Switching Regulator Model in MS Excel 2003

This is an Excel animation and an engineering model of a Buck voltage switching regulator. Excel 2003 was used. Besides real time control of common parameters such as switch ON resistance, load current, load capacitance, output voltage (vout), input voltage (vbat) etc, the user can also run very specialized tests in which the output current and “vbat” can be modulated… Read More... "Power Management: An Animated Buck Switching Regulator Model in MS Excel 2003"

## A 3D Animated Excel Roller Coaster – video preview

This is a video preview for the 3D animated roller coaster previously presented on this blog. A tutorial on this topic will be posted later. [sociallocker]>[/sociallocker] Read More... "A 3D Animated Excel Roller Coaster – video preview"

## 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). These… Read More... "Casual Introduction to Numerical Methods – spring-mass-damper system model – part#5"

## 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 is… Read More... "Casual Introduction to Numerical Methods – spring-mass-damper system model – part#4"

## 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 table… Read More... "Casual Introduction to Numerical Methods – a spring-mass-damper system model – part#3"

## 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.… Read More... "Casual Introduction to Numerical Methods – a spring-mass-damper system model – part#2"

## 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 –… Read More... "Casual Introduction to Numerical Methods – a spring-mass-damper system model – part#1"

## Dynamic Macros #1

Hi everybody, Today we’ll talk about dynamic macros very useful in engineering modeling, scientific modeling, games etc. Dynamic macros are created using two different type of loops: “For” and “Do”. – Two different but equivalent conditional “Do” loops are explored. – It is shown that macros can be assigned to drawing shapes, pictures, graph, etc. – A highly valuable Run/Pause macro… Read More... "Dynamic Macros #1"

## Triple Spring-Mass-Damper System

This is the model of a triple spring-mass-damper system in excel. [sociallocker][/sociallocker] Read More... "Triple Spring-Mass-Damper System"

## Double Spring-Mass-Damper System

This is an animated model of a double spring-mass-damper system in excel. [sociallocker][/sociallocker] Read More... "Double Spring-Mass-Damper System"

## Simple Spring-Mass-Damper System

This is the model of a simple spring-mass-damper system in excel. [sociallocker][/sociallocker] Read More... "Simple Spring-Mass-Damper System"