All about DCD Files

The DCD file type is primarily associated with NAMD.

DCD	File extension: DCD
	File type:	trajectory

What is a DCD file?

DCD files mostly belong to NAMD by University of Illinois. A DCD file is a 2D/3D architectural or mechanical drawing created with DesignCAD. Another type of DCD file contains trajectory data compiled from FORTRAN source code and used by molecular analysis programs such as NAMD, CHARMM, GROMACS, and OpenMM. DCD is also the filename extension of a document describing constraints to be applied to the structure and content of XML documents. Drive Calculator aircraft power analysis software saves aircraft parts databases in a DCD file. macOS saves a binary property list in a DCD file. Databases and database queues used by RabbitMQ message broker are also saved in DCD files.

How to open a DCD file

You need a suitable software like NAMD to open a DCD file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your DCD file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a DCD file directly in the browser:. Just drag the file onto this browser window and drop it.

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Programs that open and convert DCD files:

NAMD by University of Illinois
See the previous paragraphs to learn more about the main application. DCD files are often referred to as NAMD data files because this type of file is primarily created or used by this software.
DesignCAD (drawing) by IMSI
DesignCAD is a computer-aided design software for creating 2D and 3D mechanical parts or architectural design. It saves drawings in a DCD file. This file format is classified as CAD.
DisCryptor (encrypted database) by COSECT
DisCryptor is an obsolete encryption/decryption program. It stores an encrypted database in a DCD file. This file format is classified as Database.
Drive Calculator (aircraft parts database) by Christian Persson
Drive Calculator is a computer program for analyzing the power system(s) of electric-powered aircrafts. It uses a DCD file saved in SQLite database format to store motors, batteries, propellers, and stator databases. This file format is classified as Database.
Dynamic CD (project) by PHDCC
Dynamic CD is a compact disc containing a portable edition of an ASP.NET web server, Access database, and a wizard for extending the server's capabilities. A project created with Dynamic CD's wizard is saved in a DCD file. This file format is classified as Web (source).
GNU Fortran Compiler (data) by Free Software Foundation
GNU Fortran Compiler is an open source software for compiling programs written in FORTRAN. It saves compiled data in a DCD file. This file format is classified as Data.
macOS (binary property list) by Apple
macOS is a desktop/laptop computer operating system for MacBooks. Some programs on macOS save their property lists in DCD files. This file format is classified as Data.
RabbitMQ (database or database queue) by Pivotal
RabbitMQ is an open source message broker. Databases, database tables, and some other information used by RabbitMQ are saved in DCD files. This file format is classified as Database.
Sublime (document constraints) by Sublime
Sublime is a cross-platform code/text editing program. It can be used to create, open, and edit a DCD file containing constraints to be applied to the structure and content of an XML file. This file format is classified as Data.
Transputer Development System (object code) by INMOS
Transputer Development System, as the name suggests, is a software environment for writing, compiling, and deploying programs to INMOS transputers. It uses a DCD file to store object code written in Occam programming language. This file format is classified as Developer.

DCD file format:

To find out what program is needed to open DCD files, you need to determine the file format. A file format is determined by the file extension and signature, so JPEG images have the extension .jpg and the first bytes in the file are ÿØÿ. If the file extension or signature does not match the file format, errors will occur when opening or editing the file. So a detailed analysis of a file is vital in order to determine the format and the associated program. Our evaluation of the DCD files looks like this:

The DCD file ending is used by different programs with different formats. But the following two file formats are common:

50% of all DCD files internally use the Microsoft Compound File format, known also as OLE2 Compound Document format or Composite Document File format. Compound document files are used to structure the contents of a document in the file. It is possible to divide the data into several streams, and to store these streams in different places in the file. In this way compound document files support a complete file system inside the file, the streams are like files in a real file system, and the sections are like subdirectories. Header signature for the CFB format with 8-byte Hex value D0CF11E0A1B11AE1 (which looks like "DOCFILE"). There is also a unique Windows component object identifier (CLSID) which is f5af9edc-fbb2-4a8f-92b1-12dade75be8d or 4d3f0c00-f7ac-11d4-9734-ff601cbea63a. The data in this file is stored in streams whose names are Contents, IMAGE, Layer, PREVIEW, SYMBOL, Summary, LARGEICON, SMALLICON, SYMBOLBMP, VIEWDATA, Custom Color, PAPER SPACE, Options, Material, NEW ANIMATION TEMPLATES, WALK TEMPLATES, Light Source, LStyle List, Multiline Pattern, Shading Option and Custom Properties. The file size is in the range of 44 KB to 2 MB. The file type was developed 10 years ago and is still in use today. These files are attributed to plan, basement, patince, layout, sample, floor, front and bath.
10% of all DCD files start with the bytes 54 00 00 00 crucial for this file format. The contents of these files cannot be read by a human; only a computer program can interpret the data. The average file size is 31 MB with most files being between 310 KB and 560 MB in size. The files contain the following words: CORD, DATE, REMARKS Created and REMARKS FILENAME. These files are often associated with equilibration and step.

The remaining 40% of all DCD files are different files with different signatures, frequently e.g. SQL, PDF, plist, cXM and DCD. Sometimes used for rabbit, user, dcdreport, approval, initial, pulling or vhost. Drag & drop your file here to see the file format and a preview of your DCD file!

Technical Data for DCD File Extension

File classification:

Data

Related files:

cdc, zip, dw2, dcb, pkl, vmd, trr, fhis

Related links:

File formats, CHARMM, GROMACS

Mime type:

application/octet-stream

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: dcdfile, FileType: Document Content Description

ProgramID: DesignCAD.DCD-Document.15
EXEFile: %ProgramFiles%\IMSI\DesignCAD 3D Max 15\Dcad15.exe %1

a dcd trajectory is a special file format by University of Illinois and should only be edited and saved with the appropriate software.

How to solve problems with DCD files

Associate the DCD file extension with the correct application.
Update your software that should actually open trajectorys. Because only the current version supports the latest DCD file format. Search, therefore, e.g. on the University of Illinois manufacturer website after an available NAMD update.
To make sure that your DCD file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .DCD file online - secure, fast, and no downloads needed.