You have to order and purchase it from the Itasca Company with the USB key.

Best regards

Zbigniew

Maybe you can try a demo version:

http://www.itascacg.com/software-demo

Or request an academic licence:

http://www.itascacg.com/news/lower-academic-pricing-for-itasca-software

using cracked version of any software including FLAC or PLAXIS is not recommended since many scientific journals demand a license for numerical software as a supplement not for review 

You can visit FLAC website for details on how to go about it.

You can rent either Itasca FLAC or PLAXIS for 1, 3 or 12 months with affordable price for research or education purpose. Also the rental option enables all modules such as the cpp or UDSM for FLAC and PLAXIS.

For me, I tried PLAXIS 2D and 3D for a complete two years for education and research purpose. The license comprises all PLAXIS modules and VIP options like the User-defied soil models which is mandatory for using advanced soil models like UBCSAND.

I used PLAXIS for Soil dynamic simulations using HS-small and UBCSAND soil models. I found PLAXIS to be so easy and convenient and this company is being developed so fast. Moreover, the PLAXIS team can help you and give you continuous support for your problems and guide you to model your project in a proper way.

I recommend to check their latest 2D version and its new features through this URL (https://www.plaxis.com/product/plaxis-2d/).

I recommend Paulo's answer

Best Regards

using cracked version of any software including FLAC or PLAXIS is not recommended, ask your university

You can try this link

://ucivil.ir/blog/1396/07/13/%d8%af%d8%a7%d9%86%d9%84%d9%88%d8%af-%d9%86%d8%b1%d9%85-%d8%a7%d9%81%d8%b2%d8%a7%d8%b1-%d9%81%d9%84%da%a9-%d8%af%d9%88-%d8%a8%d8%b9%d8%af%db%8c-%d9%86%d8%b3%d8%ae%d9%87-7-%d8%a8%d8%a7-%da%a9%d8%b1/

Ask for an academic license for a given time period, they will give it to you.

Pirated version is not recommended. But you want to learn ,Send me your email! I can help you .

can anybody explain me this.

Imagine xy space as a large pinboard ruled like graph paper. It has a

regular grid but no sense of coordinate values until the origin is

positioned somewhere on the grid. Now imagine the ij grid as an

elasticated net which is pinned to the xy pinboard.

By default, node ij (1,1) is mapped to xy (0,0) and the xy and ij unit

lengths are equal. Figure 3.4 illustrates this. The ij nodes can now be

moved on the xy space, distorting the mesh in the process, to conform to

the model requirements.

Note that the ij identifiers for each node remain unchanged— the xy

coordinates mapped to the nodes are recalculated. This holds true for all

elements in the model, even for null regions or deformed regions.

There are many more tools available for building a mesh to suit model

geometries, and many ways to use them. Some of these will be explored

as meshes are developed in the example problems which follow.