## Halloween Display 2019

This video shows how the linkage systems moving spooky decorations designed by my six student teams were combined into a Halloween display.

The Halloween decorations designed by project teams 4, 5 and 6 can be seen in the video

## Halloween Design Project

Students in my MAE 245 Advanced Kinematic Synthesis class have designed Halloween decorations using a four-bar linkage by itself or in combination with a parallelogram or pantograph linkage. You can see the work of teams 1, 2 and 3 in the video.

## Mechanical Walker Project Animations: Spring 2019

Here are the solid models of some of the walkers designed by UC Irvine students in my Spring 2019 course MAE 183 Kinematic Synthesis of Mechanisms.

Walker Group 1

Walker Group 2

Walker Group 4

Walker Group 6

Walker Group 8

Walker Group 9

Walker Group 10

## Leg Mechanism for a Mechanical Walker

This is an animation of the leg mechanism for a mechanical walker designed using function generators to drive the hip and knee joints. A second parallelogram linkage is used to construct a translating leg that allows placement of the foot trajectory where ever the designer chooses.

## Construction for Three-Position Synthesis of a Four-Bar Linkage

The graphical construction of a four-bar function generator that coordinates three input and three output angles is presented in the video below. It is possible to coordinate as many as five input-output angles, but this requires numerical calculations using software like our MechGen FG iOS application.

## Five Position Synthesis of Four-bar Function Generators

Our MechGen FG iOS application provides five position synthesis for four-bar linkages. A Demo of the iPad version is provided here. It is also available on the iPhone.

## Construction for Two-Position Synthesis of a Four-Bar Linkage

The graphical construction of a four-bar linkage that coordinates two positions of an input crank with two positions of an output crank is presented in this video using Geogebra.

A linkage that coordinates the values of input and output angles is called a function generator. It is possible to design a four-bar linkage to coordinate as many as five input and output angles. However, this requires numerical calculations using software such as our MechGen FG iOS application.

## Construction of a Skew Pantograph Leg Mechanism

This video adds a skew pantograph to a four-bar linkage in order to reorient and change the size of the coupler curve. The result is a six-bar leg mechanism with a foot trajectory that is a scaled version of the original coupler curve.