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.
Kinematic for Pedestrian Protection
Example for a pedestrian-protection kinematic (the representation is simplified here) with a four bar system and an actuator. The animation includes two parts: Normal opening and closing process and the protection-activation process (in slow-motion).
The use of the Kinematic Synthesis feature in ASOM enables the user to modify any bearing positions without losing the conditions for the desired position of the hood.
Pedestrian Protection 2
Another simplified example for a pedestrian protection kinematic, this one based on a different functional principle.
The actuator is activated accordingly, in case of an impending frontal crash with potential pedestrian involvement, and generates as promptly as possible – meaning even before the actual impact happens – an increased safety clearance above the engine block.
With ASOM, corresponding kinematics can be conceptualized, assembled, simulated, analyzed and interactively optimized.
Piston Two Stroke Engine
Example for the calculation of bearing forces on a cylinder piston of a two-stroke engine, taking into account the inertia and moments of inertia.
Retractable Door Handle
Example of a kinematic mechanism for a flush mounted retractable door handle with kinematic synthesis of two kinematics (via serial connection of two synthesis methods) and the simultaneous consideration of different force and stress cases (with or without tension spring AND with or without breakout force, etc.), taking into account further restrictions such as mounting conditions and collision conditions.
The desired initial, intermediate and end positions are retained even when the technical design is modified.
In this example, a complete force design for a spindle drive to actuate a tailgate is presented. For this purpose, holding forces are computed under different ambient conditions such as inclination changes, snow loads, friction, clutches, overload cases, safety margins, efficiency factors, etc.
To correctly observe also direction-dependent influences, the complete opening and closing sequences are evaluated in real time at the same time using compressed time simulation.
The spindle drive consists of a fully configured spindle and two fully configured springs as energy storage components (one main support spring and one pop-up spring).
Everything presented here for a simple hinge can easily also be applied to an arc hinge, a four-bar system, or a different multi-bar system.
Example illustrating the kinematic analysis and interactive optimization of a toggle switch using the kinematics software ASOM v7.
In this example the operating forces for a toggle switch are analyzed. Different cases are analyzed at the same time in the same project:
- switching on without friction
- switching off without friction
- switching on with simplified friction
- switching off with simplified friction
The subsequent manual optimization of the operating forces by changing the contour takes into account all four cases at the same time and is still very easily accomplished.
Four-Bar Synthesis 1: Creation
Creation of an interactive four bar linkage mechanism 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 an interactive four-bar two position linkage synthesis in ASOM v7 with an added gas spring synthesis. 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 interactive six-bar two-position linkage synthesis used in this example is based on a Watt linkage. Already built in is a four-bar linkage mechanism used to open the lid of the storage compartment for the top in the rear of the car.
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 linkage syntheses in ASOM v7. Furthermore the ‘free’ editing feature is demonstrated. In all of these cases the highest priority of the software is to always preserve the interactive kinematic synthesis of the multi-bar system.
An example for the interactive calculation of a truss (here: a simplified bridge) with the kinematics software ASOM v7, considering the following features:
- a truck drives over the shown bridge
- both wheel pairs (front and rear) transmit partial loads independently
- all results for all parts of the bridge (e.g. bearing forces and tensile/compressive member forces) are immediately available for the whole distance of travel
- changes of the truck load are considered automatically
- on changes in truss structure all results are updated immediately
It is also shown how the kinematic constraints and the acting forces and masses for the system were entered.
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 necessary 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 example of a four bar system generated ‘on-the-fly’ it is demonstrated how the use of a group of several alternative manual force elements makes it possible to kinetostatically determine the required forces (balance forces / manual forces) at several contact points simultaneously, even while these points are modified, singly or as a group.
Elliptical Cross Trainer
In this example, the kinematics and some selected kinetostatic forces of an elliptical home trainer are analyzed in ASOMv7.
To accomplish this, the forces exerted by the person are passed into the system and are balanced kinetostatically by countering forces and torques in the flywheel. One bearing force is determined as an example, and by way of a specially generated slider the (simplified) power input from the person can be varied interactively.
The kinematics are divided into three connected layers:
- Left home trainer layer
- Right home 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.
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.
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 have formulated quality criteria based on an intended motion, thus creating a rule set. The goal is to optimize the quality index of that rule set (n-Point Synthesis). To this end values that have been set in the Optimizer itself are changed within a given solution space until a satisfactory solution has been found.