Static Calculations of Watch Components with Ansys Mechanical
Designing parts of watches using the finite element method
Learn how to use Ansys Mechanical's advanced options for the watchmaking industry and application to watch part examples. This training is offered as a 2-day course.
Duration
2 days
Prerequisites
Basic knowledge of Ansys Mechanical
Software used
Ansys Mechanical
- Being able to simulate on one’s own watch assemblies
- Mastering the mesh: mesh evaluation and improvement
- Ensuring convergence of non-linear models
- Evaluating results and identifying required changes
Description
You want to know whether your watch mechanism is correctly dimensioned? Ansys Workbench allows you to check the integrity of the parts as well as to calculate the forces and torques acting in your mechanisms, and this directly at the design stage. During this training course, you will simulate about ten watch parts such as a spring, a jumper, a split-time counter mechanism or a balance-spring. You will carry out static analyses of 2D and 3D assemblies, considering friction between the parts and large displacements.
The theoretical background required for advanced contact management and to allow the convergence of non-linear models will be detailed, discussed and applied during the exercises.
All the course modules will enable you to familiarize yourself with the advanced knowledge required for the static simulation of watch parts. After this training, you will be able to safely simulate and evaluate your own watch assemblies. This saves you time and money by reducing the number of prototypes.
Detailed agenda for this 2-day training
Day 1
01 Simulating watch springs with Ansys Mechanical
- Refresher for static mechanical simulation with Ansys Mechanical
- Evaluation of the mesh and results
- Workshop caliber spring: Stress calculation of the pre-loaded and fully loaded spring
02 Simulation and geometrical considerations
- Modification of the geometry
- Export of the deformed geometry
- Workshop lever: Stress assessment of the preloaded spring and the torque acting on the lever
03 Shock study
- Implementing acceleration
- Workshop balance bridge: Calculation of stresses and displacements in the bridge, the Kif spring and the balance under the effect of a 5000 g acceleration
04 Contact management and convergence
- Advanced contact management
- Convergence of non-linear models
- Evaluation of contact-related results
- Workshop date mechanism: Stress assessment of the date spring and calculation of the torque acting on the date wheel
Day 2
05 Simulation of a jumper
- Summary of the simulation pieces of advice provided for watch components
- Workshop jumper and wheel: Calculation of the stress in the preloaded spring and of the torque acting on the wheel
06 Study of joints and tightness
- Calculating the assembly driving force and the tightness of seals (contact pressure)
- Comparing standard fine mesh and adaptive meshing
- Workshop: Glass assembly
07 Study of a fly back hand mechanism
- Calculation of the stresses in the fly-back hand pliers and column wheel spring
- Calculation of the torque required on the column wheel to spread the pliers' jaws apart
08 Simulation of balance springs
- Workshop 1: Calculation of stress, angular rigidity and position of the center of gravity as a function of the rotation of a flat balance spring and of a Breguet balance spring
- Workshop 2: Calculation of deformations and stresses in a balance spring at an acceleration of 100g
Your Trainers
Bernard Feuillard
Placement in the CADFEM Learning Pathway
Participant data
Additional information
Commentary
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