Are the programs accurate and will they work on every computer?

All programs are tested to comply with various known solutions. The programs work on the vast majority of computers. However, there are some configurations that may not be compatible. You may evaluate all software for free. Please report any errors or bugs.

Are the free programs fully featured? Do they have any restrictions?

Yes, all free and pay programs are fully featured. There are no programs with limited use. The free programs do not have any restrictions on use. However, you are not permitted to decompile any programs.

What do I get when purchasing the rights to the pay software.

You can use all pay programs, and updates, that are offered during the time period that you purchased the rights to.

Do you offer a trial for the pay programs?

Yes, you may use the pay programs for 15 days for evaluation purposes only. After that, you are legally required to comply with the terms of agreement.

How does the license work?

The software programs do not need to be activated and are ready for immediate use upon download. However, to legally use the pay programs after the trial period, you must purchase the right to do so.

Why not require the programs to have a license key to operate?

This can be done. However, this also negatively affects the product and the user experience. It is a trade that has been made and it is expected that you will comply with the terms of agreement.

What prevents someone from not complying with the terms of agreement?

It is impossible to prevent non compliance. However, users who violate the terms of agreement will risk legal prosecution. If users are non compliant, it is impossible to continue to offer new features and new software.

Do students and teachers need to pay for the software?

Free programs do not require payment and can be used by anyone. Students must purchase the pay programs, but at a discounted rate. Teachers and professors are also eligible for the discounted rate.

Are there any manuals? How do I learn the programs?

The programs contain comments to explain how they are used. In addition, the reference book, released in late 2016, will explain some of the programs in greater detail.

What happens if I forget to pay?

No problem. Just pay for the block of time that you forgot to pay for.

Why are some programs free of charge?

These programs are offered to assist both students and practicing engineers in the learning process. They are offered as a courtesy from ESP Composites. To help ensure the continued improvement of the free programs, you may optionally contribute by selecting any dollar amount from the purchase link.

How does Excel perform finite element analysis?

Excel can act as a pre/post processor to finite element analysis software. For some software programs, the open source finite element solver CalculiX is used. The latest Windows version can be found at bConverged. Note that the Excel programs use a prior version of CalculiX to ensure compatibility. Do not use the latest version in conjunction with the software from ESP Composites.