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ASOM Examples

On this page we present a selection of examples that demonstrate some of ASOM's most interesting functionalities. Just click on the still next to an example to see a short clip illustrating the corresponding functionality.

You can find more videos (examples and tutorials) on YouTube as well as on our download page.

Four-Bar Synthesis 1: Creation

Creation of a four-bar synthesis for the height adjustment of a car seat in ASOM v7. Using a real time synthesis the joints can be placed according to the given requirements.

Four-Bar Synthesis 2: Behavior

An example for the behavior of a four-bar synthesis in ASOM v7. The linkage is based on a practical example demonstrating the compu­tation of the movements and forces while opening and closing a car’s trunk lid. As you can see, all of these factors are changed in real time even while editing the linkage.


Six-Bar Synthesis 1: Creation

Creation of a linkage to fold away and store the retractable hardtop of a convertible in ASOM v7. The six-bar synthesis used in this example is based on a Watt linkage.

Six-Bar Synthesis 2: Adaption

Linkages that have been constructed for a retractable hardtop are used to compare the adaptability of six-bar and four-bar syntheses in ASOM v7. In both cases the highest priority the software has is to preserve the synthesis.


Truss Calculation

An example for the interactive calculation of loads and forces in a truss with the kinematics software ASOM v7.

Canvas-Lifting Mechanism

In this example generated 'on-the-fly', a canvas-lifting mechanism (e.g. for home cinema projection), supported by two gas springs, is animated and the needed lifting force ist calculated.

Finally, the fixed bearings of the two subsystems are modified simultaneously and the resulting changes of the necessary lifting force (here at room temperature: 20°C) over the entire opening process can be observed in real time in the diagram.


Kinetostatic Sensor Field

In this 'on-the-fly' generated example of a four bar system the simultaneous kinetostatic determination and modification of several alternative manual force positions will be shown (as a sensor field) for an operating kinematic solution.

Elliptical Cross Trainer

In this example the kinematics, and partially also the kinetostatics, of a Cross Trainer are analyzed in ASOM v7. To accomplish this, the forces exerted by the person are added to the system and the countering forces (or torques) of the flywheel are used to bring the force system into a kinetostatic equilibrium. At one bearing the determination of the bearing forces is shown, and with the aid of an auxiliary slider the (simplified) power output of the person can be varied interactively.

The kinematics are distributed over three layers and connected at certain contact points.

  1. Left Cross Trainer layer
  2. Person
  3. Right Cross Trainer layer 

Straight Line Mechanisms

Converting rotary into smooth linear motion was one of the biggest kinematic problems inventors faced in the late 17th century. For these videos we have recreated various straight line mechanisms in ASOM v7 that have solved the problem in approximation – or even exactly.

Approximate Solutions

Watch this combination of clips here that show the movement of straight-line mechanisms according to Chebyshev, Watt, Roberts, Hoecken, and Evans, as well as a harbor crane mechanism, a straight crank linkage, a conchoidal and an indicator mechanism.

Or watch the individual clips on YouTube.

Exact Solutions

Watch this combination of clips here that show the movement of straight-line mechanisms according to Roemer-Cartwright, Peaucellier, Hart, Kempe, and Sylvester, as well as a pantograph and a symmetrical crank slider with and without synthesis.

Or watch the individual clips on YouTube.


Optimizer 1: Movement Optimization

Design of a mechanical system with the Optimizer in ASOM v4. We formulate quality criteria based on an intended motion, thus creating a rule set. The goal is to optimize the quality index of that rule set.


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