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Search Results for “4-bar-linkage”

By Phil Todd
Four Bar Linkage
You can drag the vertices of the shadow linkage to alter its geometry. Can you create a linkage which draws a figure 8?  How about the letter D?  How close to a straight line can you get? If you like this, you might like my 4 bar linkage clock app.

Tags: 4-bar-linkage, curve

By Marissa
A Second Look at the Four Bar Linkage
From "Creating HTML5 Apps with Mechanical Expressions."

Tags: example, four-bar-linkage

By Marissa
Four Bar Linkage
From "Creating HTML5 Apps with Mechanical Expressions."

Tags: example, four-bar-linkage

By Phil Todd
Maximum Area Configuration of a Four Bar Linkage
You can set the lengths of the four bars in your linkage.  Then drag point B till you think it encloses the maximum area.  Click the button to examine the area. Click Solution to observe that the solution occurs where all four vertices lie on the same circle.

Tags: circumcircle, linkage, mechanism

By Phil Todd
Watt's Linkage
Watt’s approximate straight line linkage is used in automobile suspensions. Drag the red points to see the mechanism move. What is the angle of the approximate straight line? Press Show for a hint.

Tags: Watt, four-bar-linkage, mechanism

By Phil Todd
Area Under a 4 bar linkage
Drag B and find the configuration with the greatest area. Now press the Show Circle Button.  The circle is the circumcircle of A B and D.  Does C also lie on it? Now try to find the minimum area.

Tags: maximum, area-circumcircle, 4-bar

By Phil Todd
Four Bar linkage with line
The line has equation Ax+By+C=0 You can change line parameters and observe its location relative to the coupler curve. You can also press teh F button to see the coordinates of the coupler point F.

Tags: mechanism, linkage

By Phil Todd
Four Bar Linkage
Enter the lengths of the links and the distances BE and EF. BE and EF can be negative.

Tags: mechanism, linkage

By Phil Todd
Tchebychev's Straight Line Linkage
With certain values for the link lengths, this mechanism approximates a straight line. Experiment with different values of AB and BC then look for AD which keeps the path of point F straight.

Tags: Watt, mechanism, four-bar-linkage

By Phil Todd
A door which opens both ways
Here is a design for a 4 bar linkage which opens a door either to the left or to the right.  Note the pivot points for the linkage are the circumcenters of the triangles whose vertices are the corresponding ends of the door in the three required positions.

Tags: linkage, 4-bar, STEM-challenge


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